What determines the kind of element is what is in the atomic structure

1.The type of atom is determined by the number of protons in the nucleus, the number of neutrons, and the electron configuration outside the nucleus.

The element species is determined by the number of protons in the nucleus.

There is no reason for this, a specific atom has a specific number of protons in the nucleus, the number of neutrons and the electron configuration outside the nucleus, and if these three are different, of course, they belong to different atomic types.

2.The radioactive element becomes less mass in the decay process, and at the same time emits energy in the form of rays, and at the same time releases and particles, that is, helium nuclei and electrons, and there is also mass loss in the process of becoming light nuclei, and this part of the loss is converted into energy, which can be calculated by Einstein's mass-energy equation e=mc 2.

3.The fundamental reason for this is that the nuclear force in the nucleus is not in equilibrium with the Coulomb force.

Whether it is a proton or a neutron, there is a nuclear force between them, which is an attractive force.

There is a Coulomb force between protons and protons, which of course is known to belong to the force of repulsion.

If there are too many protons, then the repulsive force is greater than the attraction force, which is of course unstable. Through the effect of protons becoming neutrons, the repulsive force is reduced, the attraction is increased, and finally the two are balanced. This is the (cascading) decay process.

Similarly, if there are too many neutrons, the attraction force is too greater than the repulsive force, and the two forces are unbalanced, which also affects the stability of the system. So to decay, to decrease the number of neutrons or to increase the number of protons.

In summary, the system is stable when the number of protons and the number of neutrons in the nucleus are coordinated. Otherwise, it decays and transitions to stability. It's like a society where the ratio of men to women can't be too imbalanced.

In addition, when there are too many protons and neutrons in the nucleus (e.g., when the mass number exceeds 200), even the equilibrium of the two forces is unstable. It's like building blocks, the more blocks there are, the more unstable the frame becomes. It's like a country, such as the former Soviet Union, where the country is too big to govern.

It should also be noted that decay and nuclear fission of atoms are two different things, and several people upstairs have confused them, which is wrong, decay is spontaneous, and nuclear fission occurs when the nucleus of an atom is bombarded by neutrons from the outside world, such as the chain reaction of an atomic bomb.

Number of protons in the nucleus.

An element is a general term for a class of atoms with the same nuclear charge number (i.e., the number of protons in the nucleus), and the most essential difference between different elements is that the number of protons is different, so the type of element is determined by the number of protons.

Protons determine the kind of element.

Is it?.. I think it's the factor.

The answer to the question of what is the atom that determines the type of element is: the type of atom is determined by the number of protons and the number of neutrons.

Atom: The smallest unit in which an element retains its chemical properties. A positive atom contains a dense nucleus and a number of electrons that are negatively charged around the nucleus.

The nucleus of a negative atom is negatively charged, and the surrounding negative electrons are positively charged. The nucleus of a positive atom is made up of positively charged protons and electrically neutral neutrons. The antiproton in the nucleus of the negative atom becomes negatively charged, thus making the nucleus of the negative atom negatively charged.

When the number of protons is the same as the number of electrons, the atom is electrically neutral; Otherwise, it is a positively or negatively charged ion.

Depending on the number of protons and neutrons, the type of atom is different: the number of protons determines which element the atom belongs to, while the number of neutrons determines which isotope the atom is of that element. Atoms make up molecules, and the same kind of charges repel each other in the molecules that make up the substance, and different kinds of charges attract each other.

Four decisions of the atom:

1. The number of protons determines the type of element, where the number of protons = the number of nuclear charges = the number of electrons outside the nucleus = the number of atomic numbers.

2. The number of protons and neutrons determines the relative atomic mass, and the number of protons + neutrons is approximately equal to the relative atomic mass.

3. The number of protons and the number of electrons outside the nucleus determine the type of particle: (number of protons) the number of electrons outside the nucleus, which is a cation; The number of protons is the number of electrons outside the nucleus, and the particle is anion; Number of protons = number of electrons outside the nucleus, and the particle is an atom. ）

4. The number of electrons in the outermost shell determines the chemical properties of the element.

The type of element is mainly determined by the number of protons inside the nucleus of the atom. Element is a general term for a class of atoms with the same number of nuclear charges, and the essential difference between different elements is that the number of protons is different, so the type of element is determined by the number of protons, and the isotopes of elements of the same substance are those with equal numbers of protons and different numbers of neutrons.

Elements are divided into metallic elements, non-metallic elements and noble gas elements, and metallic elements are metallic, that is to say, metal atoms are prone to electron loss; Non-metallic elements are non-metallic, i.e., scrap metal atoms easily gain electrons.

In the reaction, non-metallic elements are usually oxidized, and can form gaseous hydrides with H2, and the hydrates of the most ** oxides are acidic; Metal elements are reducible and can react with water or acid to form H2, and the hydration of its oxides is alkaline.

The type of atom is determined by the number of protons, the outermost electron number of the element is greater than 4 easy to get electrons, less than 4 is easy to lose electrons, so the chemical properties of the element are determined by the outermost electron number, the atom is composed of the nucleus and the outer electrons of the nucleus, the mass of the electron is very small and negligible, so the mass of the atom is mainly concentrated in the nucleus.

According to the role of electrons outside the nucleus in chemical reactions, the most essential difference between the same element is the number of protons, and the number of electrons in the outermost shell determines the chemical properties of the element. So the most important factor that determines the chemical properties of a substance is the number of outermost electrons of the atoms that make up the substance.

In chemistry, an element is a general term for a class of atoms with the same number of nuclear charges (or protons). In mathematics, an element is an element and is each object that makes up the set.

A chemical element is a general term for a class of atoms with the same number of nuclear charges (the number of protons in the nucleus). From a philosophical point of view, an element is the result of a qualitative change caused by a quantitative change in the number of protons of an atom.

Common elements are hydrogen, nitrogen, and carbon, among others. So far in 2019, a total of 118 elements have been discovered, 94 of which are found on Earth. The nuclei of the elements with atomic number 83 (bismuth element and later) are unstable and decay.

The 43rd and 61st elements (technetium and promethium) have no stable isotopes and decay. The heaviest surviving element in nature is neptunium 93.

The origin of the idea of the elements is very early, the ancient Babylonians and the ancient Egyptians once regarded water (and later air and earth) as the main elements of the world, forming the three-element theory. The ancient Indians had four major doctrines, and the ancient Chinese had the Five Elements Doctrine.

Here are some examples of how these elements can be used:

1. Carbon element: Carbon is the basis of life, and human beings use carbon to make graphite, carbon black, carbon fiber and other materials, and it is also used in the manufacturing process of steel, alloy, polymer materials, etc.

2. Hydrogen: Hydrogen is the most common element in the universe, widely used in fuel cells, rocket fuels and other fields, because its combustion can produce clean water vapor, so it is also widely used in the field of environmental protection.

3. Metal elements: Metal elements have good electrical conductivity, thermal conductivity, hardness, toughness and other characteristics, so they are widely used in electronics, machinery, construction, aviation, aerospace and other fields, such as iron, copper, aluminum, magnesium, zinc, tungsten, etc.

4. Rare earth elements: Rare earth elements have magnetic, photoelectric, superconductive, fluorescent and other characteristics, and are widely used in nuclear fuel, medical, electronics, new energy and other fields, such as cerium, neodymium, dysprosium, samarium, erbium, thulium, ytterbium, ytterbium, etc.

5. Oxide elements: Oxide elements can produce distinctive colors, which are used in glass, ceramics, glazes, dyes, electronic components and other fields, such as titanium dioxide, antimony oxide, copper oxide, etc.

In the particles that make up atoms, the kind of element is determined by ()?

1.Number of electrons.

2.Number of protons.

Correct Answer: Number of protons.

Protons belong to the baryon class and are made up of two upper quarks and one lower quark by gluon in a strong interaction. The number of protons in the nucleus of an atom determines its chemical properties and what kind of chemical element it belongs to.

First of all, the structure of the nucleus can determine the kind of element. In fact, it is mainly affected by the number of neutrons and protons, resulting in the completely different properties of the compounds or elements formed by each element. For example, the nucleus of a general hydrogen atom is only a proton, while a hydrogen atom with one more neutron is called heavy hydrogen, or deuterium.

Some of its properties are very different from those of the hydrogen atom in general.

Secondly, the number of electron layers outside the nucleus determines the ability of the atom to attract electrons, that is, how easy it is to change the electron to anion or lose electron to cation. For example, Na and K, which belong to the same group a, have the same number of outermost electrons and many properties are very similar, but the number of electrons in the outer nuclear shell Na is one less than K, that is, in a chemical reaction, K is more likely to lose its outermost electron than Na (although Na is also an electron in the outermost shell), so this difference will cause K to behave more reactively than Na. The reaction is more violent.

Finally, the outermost electron number of an atom determines with which elements it is easier to form compounds and thus form the material world. For example, metals usually do not have negative valencies. This is because the outermost electrons of metals are generally less than 4.

Therefore, it is difficult to form anions. Therefore, there are very few metal-to-metal compounds. Even if two metal ions are present in a compound at the same time, there must be a non-metal ion that attracts them at the same time.

In summary, the factors in the atomic structure are closely related to the chemical properties of the element.

Element: A class of atoms with the same number of nuclear charges (i.e., the number of protons in the nucleus) is collectively referred to as a bibloid element.

The number of nuclear charges of an atom (i.e., the number of protons in the nucleus) determines the elemental species of an atom or ion.

Most of the individual element symbols represent: an element, an atom of that element, and a element.

But symbols such as Hn O Cl do not represent elemental substances, which are: H2 N2 O2 Cl2

At least the top four elements in the earth's crust by mass fraction are: Ooxy, Si, Si, Al, Aluminum, Fe, Fe. Aluminum is the most abundant metallic element in the earth's crust.

The "grammar" of chemistry: "a molecule" is made up of "an atom"."A certain substance" is composed of "a certain state of the stove element sail number" or "a certain molecule" (a metal element, a noble gas is directly composed of a certain atom).

For example, water is made up of hydrogen and oxygen, and water is made up of water molecules. 1 water molecule consists of 2 hydrogen atoms and 1 oxygen atom.

Constituent elements and substances are macroscopic concepts, which only represent types, not numbers. It cannot be said that "water is made up of two elements of hydrogen and one element of oxygen".

Particles with the same nuclear charge number are not necessarily the same element, the following particles have the same nuclear charge number:

H2 and He Co, N2 and Si O2, S and S2- Oh and F

Differences and connections between elements, molecules, and atoms.

Elements Composition The macroscopic concept of matter, only talking about types, not the number of similar atoms, the general term composition, the composition of the microscopic concept, talking about both types and numbers.