Are all elements converted from hydrogen?

It's easy to react first. It's hard to remake.

Naturally, that's the way it is.

Hydrogen bonding is the hydrogen atom and ONF

The electrostatic interaction between atoms is stronger than the van der Waals force but less than that of chemical bonds.

About 100 seconds after the big **, the temperature drops to 1 billion degrees, which is the temperature inside the hottest star. At this temperature, protons and neutrons no longer have enough energy to escape the attraction of the strong nuclear force, so they begin to combine with the nuclei that produce deuterium (heavy hydrogen). The deuterium nucleus contains a proton and a neutron.

Then, the deuterium nucleus and more proton neutrons combine to form the helium nucleus, which contains two protons and two neutrons, and also produces small amounts of two heavier elements, lithium and beryllium. It can be calculated that about 1/4 of the protons and neutrons in the thermo-large ** model have been converted into helium nuclei, as well as small amounts of heavy hydrogen and other elements.

The remaining neutrons decay into protons, which are the nuclei of the usual hydrogen atoms.

These nuclei are electropositive, and they bind the passing electrons, thus forming hydrogen atoms.

This is the ** of hydrogen.

Summary. Hello, glad to be able to answer your question, according to the situation you have described, the atoms that can usually form hydrogen bonds in general at present are N, O, and F

Hello, glad to be able to answer your question, according to the situation you have described, the atoms that can usually form hydrogen bonds in general at present are N, O, and F

At 1000K, the following reaction occurs in a closed container: 2a

g) b(g)-2c(g), if the reaction will be measured, the conversion rate of a under this condition is 80%, and the concentration of each substance and the equilibrium constant of the reaction at equilibrium are calculated.

Hello, if it is convenient, I hope you can take a picture of the question**, so that I can be more accurate with your question, thank you for your understanding

Why can EDTA be used as an antidote to heavy metal ions such as PB2+ and HG2+? Write out the relevant ionic equations.

Hydrogen bonding is the electrostatic interaction between hydrogen atoms and O n f atoms that is stronger than the van der Waals force but less than the chemical bond.

Hydrogen is a chemical element, which is ranked first in the periodic orange acre table. The usual elemental form of hydrogen is hydrogen. It is a colorless, tasteless, odorless, and extremely flammable gas composed of diatomic molecules, and hydrogen is the lightest gas.

The hydrogen atom is the atom of the hydrogen element. The hydrogen atom model is that the electrically neutral atom contains a positive proton and a negative valence electron, and they are bound to the nucleus by Coulomb's law. The hydrogen atom is the most abundant isotope.

Hydrogen in the universe is transformed from elementary particles. At the beginning of the universe, hydrogen was about 70% and most of the rest was helium. When a star is said to be "fuel depleted", it means that its core is depleted, because nuclear reactions occur only within 20-30% of the core radius.

In fact, hydrogen makes up more than 70% of the sun's hydrogen even at the end of a star's lifetime. Most of the Sun's hydrogen comes from parts of its predecessor stars that are not related to nuclear reactions. Some of them come from other interstellar hydrogen clouds.

No. From the dawn of the universe to the present, hydrogen consumption during star formation is almost 0%, and hydrogen is still overwhelmingly dominant even in the oldest galaxy clusters.

<> free hydrogen in the universe is abundant and unlikely to be depleted in the foreseeable future. Hydrogen in stars can fuse to form heavier helium, which releases light and heat. The sun has not run out of hydrogen, and neither will the universe.

Supernova produces new hydrogen, and the cycle repeats. The macro theory is the only theory that has a "beginning".

So there must have been a time when hydrogen became the main component of the universe. Architecture always starts with laying the foundation. But this question is flawed, because according to the above logic, it is clear that before hydrogen is formed, more fundamental particles are formed.

But we don't know for sure how small the most basic particles are, and if there is something between matter and energy.

So, the term is actually not accurate, and when you ask this question, you clearly define the stage in which the hydrogen atom emerges and becomes the main form of matter, starting from zero. But before you define it in the first place, a lot may indeed be going on. Therefore, it is more reasonable to say that the material and energy density of the universe are closely related to the age of the universe.

It takes time for energy to be converted into matter and for matter to become complex. The high content of light matter indicates that the age of the universe in our space is still very short. It should also be noted that if all matter in this universe (the known universe) is converted into hydrogen atoms, then there are only two to three hydrogen atoms per cubic meter on average, which is much thinner than the vacuum known to man.