Why is the valency of a elemental substance 0?

Elemental, because it is not a compound, it is not a valency! If you have to say that he is 0, it means that he is electrically neutral. Electrically neutral due to the fact that it is made of the same atom.

The nuclei of the same kind of atoms have the same attraction to electrons outside the nucleus, and the result is that they divide the electrons outside the nucleus, and the total charge of the electrons outside the nucleus is equal to the total charge inside the nucleus, so you can say that the valency is 0! But this is a very inappropriate statement, if it is a judgment question, then your proposition is wrong!

First: the most basic condition for valency is that the substance must be a compound, and there is no valency for elemental matter.

Second: the valency must be zero under the different combinations of electrons of different substances, when the electrons they lose and the electrons they gain are oppositely charged, the valency is 0. It can be seen that this question is completely untenable, and you can ask the teacher for detailed consultation on whether there is a mistake in this question or a typographical error!

Children's shoes, for elemental matter, there is no concept of valency, valency is for the elements in the compound. The element is in an electrically neutral state, neither losing electrons nor gaining electrons, where does the valency come from?

The chemical bonds in metal elements are metallic bonds that are composed of electron cations and free electrons, and there is no valency.

The chemical bonds in the non-metallic elements are non-polar covalent bonds, and the shared electron pairs are not biased towards either side, so there is no valency either.

The property of a certain number of atoms of an element that is combined with a certain number of atoms of other elements is called this element'sSynthetic sail mega price。Elemental matter is not a compound, so the valency of elemental matter is zero.

If there are no electrons gained or lost between atoms or there is no shift in electron pairs, the valency shows zero valence. However, there are no gains and losses of electrons and electron pair shifts in the element, so the valency is zero-valent.

Elemental substances are pure substances composed of the same elements.

A pure substance that is composed of two or more elements, as opposed to an element, is called a compound.

Elemental classification. 1. Metal.

Solid metals are bonded by metals.

Combined into metallic crystals. In order to ensure the stability of the crystal, the atoms are densely packed. Trapped because there are free electrons inside the crystal, metals are conductive and easy to lose electrons.

2. Non-metallic.

Non-metallic elements are generally covalently bonded into molecules. At room temperature, many non-metallic elements exist in the form of diatomic molecules, such as hydrogen, oxygen ruler rent, etc. Some elements can also form polyatomic molecules, such as ozone (O3) and footballene.

c60) and so on. The elemental substances that can form atomic crystals are solid and hard at room temperature, such as diamonds.

The main reason is that usually valency refers to the fact that an atom gains or loses electrons, and when it neither gains electrons nor loses electrons, it is elemental. Of course, the valence of its jujube spring is 0, I hope this will help you understand the socks lead and help you.

The valency of a single element is zero. If the element is to show the valence, the other is to show the miscellaneous valence, but the average valence of the element is zero price.

Because the element is composed of atoms, the atoms are electrically neutral, and the atoms are bonded into bonds by sharing electron pairs with each other, regardless of each other, so the dispersion valence of the celery is zero.

The element is electrically neutral, and the valency is of course zero. If the elemental material is electrified, then we will feel electrocuted when we touch or take the element.

Because matter can exist stably, there is a need for stability in nature, or the minimum principle of energy. When a substance is charged, it is easy to attract charges of different properties and repel charges of the same nature. So it will cause him to not be able to exist stably.

Of course, in the ten acres of solution, such as sodium ions and chloride ions, we can say that it is stable, but in fact it is constantly absorbing and repelling).

elemental elementsValencyis 0.

Valency is a property of an element when it forms a compound, which is manifested in the gain and loss of electrons or the sharing of electron pairs.

offset. The atom that obtains the electron or shares the electron pair is biased has a negative valence, and the atom that loses an electron or shares the electron pair deviates has a positive valence. When an element is formed into an element, there is no gain or loss of electrons, and there is no shift in the electron pairs used by the common liquid, so the valency of the element is specified to be zero.

Valency of non-metallic elements

Since the number of outermost electrons of the atom of a metal element is less than 4, it is easy to lose the outermost electron in the chemical reaction and exhibit a positive valence, that is, the valence of the metal element must be buried in a cluster. When a non-metallic element is combined with a metallic element, it usually obtains electrons, and the valency is negative. However, when the non-metallic element is followed by the oxygen element.

When combined, the collapsed oxygen element must be negative, and the other non-metallic element will show a positive valence. For example: sulfur, metals or hydrogen.

Sulfur exhibits a negative valence when combined.

The origin of valence is the number of electrons gained and lost in the search rock.

An atom gains 1 electron, the valency is -1, it gets 2 electrons, the valency is -2 and an atom loses 1 electron, the valency is +1, it gets 2 electrons, the valency is +2, and so on.

In the element, all are one kind of atom, and the power to attract electrons is equal, so no one will get electrons, and no one will lose the electrons, so the valency is 0

1.If there is no gain or loss of electrons between atoms or there is no shift in electron pairs, the valency will show 0valence. There is obviously no gain, loss and electron pair shift in the element, so it must be 0 valence.

2.The valency of oxygen is minus 2 valence, which is its valence state in the compound, whereas in elemental oxygen it is minus 2 valence. 3.

Elemental matter is a pure substance formed by atoms of voltaic elements in the same element, all of which are the same atoms, and the nucleus has the same attraction to electrons. 4.Compound refers to a pure substance composed of two or more elements, with different atoms, the ability of the nucleus to attract electrons is different, so there will be electron gains and losses or electron pairs will be shifted, so the valency Zhonghe is only in the compound is not 0 price to sell Peipai.

Definition: A valence reed state is the number of atoms that represent an element that can be combined with other atoms, i.e., the number of shared electron pairs.

The main differences are 1There is no positive or negative valency, for example, the valency of Fe in Fe2O3 is 3, and the oxidation number is +3

2.The valency in the elemental medium is not necessarily 0, for example, the number of covalent bonds between O and O is 1 in the medium crude O2, so the valency is 1, not 0

The number of covalent bonds between n2, n and n is 3, so the valency is 3 instead of 0

No electrons are gained or lost, so they are not charged, and the valency is zero.

Think of it this way: the atom itself: the nucleus has n positive charges, and the outer electrons also have n negative charges. The valence of the rented shed is (+n)+(n)=0;

Once it loses an electron, it is 0-(-1)=+1, for example, na loses an electron to form na+, and the valency is +1;

Get electrons, similarly.