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The light hydrogen and helium gasses were swept out of the inner solar system by the intense solar wind of the young sun. The outer planets retained the hydrogen and helium as the solar wind diminished with distance.
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Why do different planets have different atmospheres?
All the sun's planets probably had similar atmospheres when they first formed, billions of years ago. The most common gases were the light gases, hydrogen and helium, with smaller amounts of oxygen, nitrogen and other gases. The immense gravity of the giant planets, Jupiter, Saturn, Uranus and Neptune, was able to hold the hydrogen and helium, which remain the predominant gases in their atmospheres, along with methane formed by the combination of hydrogen with free carbon. However, hydrogen and helium gradually escaped from the atmospheres of the smaller planets, where gravity is insufficient to hold the light gases permanently. Even the heavier gases, such as oxygen and nitrogen, as well as carbon dioxide and water vapour, can gradually escape from smaller planets, such as Mars and Mercury. So, these planets now have quite thin atmospheres. The Moon and other small bodies in the solar system have essentially no atmosphere. In our solar system, only the Earth and Venus are the right size to lose most of the light gases, while retaining gases such as oxygen, nitrogen, carbon dioxide and water vapour.
How many extra valence electrons does helium need to become stable?
Helium has 2 valence electrons and has completely filled orbitals / shells and helium is stable.
What element that has 1 electron?
Hydrogen has 1 electron in its outer shell. other elemnts also have just one electron in their outer shell, the alkali metals, group1; lithium, sodium potassium, rubidium, caesium, frankium the coinage metals, group 11; copper, silver, gold
Which has higher density balloon filled with water or helium?
I would say an air filled balloon if you fill it with just plain air. I am basing this on the principle of osmosis and diffusion. A substance such as a gas will travel from an area of increased concentration, such as a balloon filled with helium, to an area od decreased concentration, such as the room the balloon is in. If you fill the balloon with air identicle to that in the surrounding room it negates diffusion.
How much of electrons do atoms have?
In a neutral atom, as many as the atom's atomic number (or number of protons): 1 for hydrogen, 2 for helium, 3 for lithium, etc. However, the atom can also gain or lose electrons - converting it into an ion, and resulting in more or less electrons than the atomic number.
What did the planets near the sun lose because of the sun's temperature?
All their hydrogen and helium.
How many electrons does it take for hydrogen and helium to become stable?
Helium is already stable. Hydrogen should gain or lose one electron to be stable.
Does the sun lose energy as it shines?
Yes. The sun loses energy as it shines. That is because it shines by turning hydrogen into helium.
What element has 1 protons 1 neutrons and 2 electrons?
It is hydrogen element. It is tritium isotope of hydrogen.
Why did Earth's early atmosphere lose its hydrogen and helium gases?
The mass of the Earth provides insufficient gravitational attraction to prevent these very light gases from escaping into space.
Do acids lose or gain hydrogen ions?
Acids lose hydrogen ions.
If I lose a hydrogen from an acid what do I have now?
Hydrogen
Why does hydrogen lose its combustibility after it combines with oxygen?
Why dose hydrogen lose its combustibility after it combines with oxygen
Why are the inner planets composed of heavy elements and outer planets composed of gas?
During the creation of the planets, gravitational forces pulled the heavier planets towards the center. The lighter gas filled planets by default established further orbits. It is thought that heat caused the inner planets to lose their gas composition.
What element has two electrons?
The only neutral atom with two electrons is helium; however, lithium will lose one electron when becoming an ion to have two electrons. Hydrogen can also gain an electron (compounds called hydrides) to have two electrons also.
Why would the sun explode?
As stars grow older, they lose energy. The sun is growing older and it is losing hydrogen and helium (the gases on the outer region). When the sun loses all of its energy it explodes. It then becomes a black dwarf.
What has a 1s 1 orbital?
One option is a helium atom. Another is a Lithium cation. Or a beryllium cation. Or boron for that matter. Cause Li would be 1s2 2s1, Be would be 1s2 2s2 and Boron would be 1s2 2s2 2p1 so if they were to lose their valence electrons to become ions (cations) then they would have a 1s2 orbital. :D
