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Do hydrogen and helium make up about 50 percent of the atoms in outer space?
Wiki User
∙ 14y ago
While less than 5% of the universe is made up of atoms, hydrogen and helium make up 98% of the atoms in the universe.
Wiki User
∙ 14y ago
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What star in the life cycle of stars fuses hydrogen and helium?
A "red giant" star can fuse both hydrogen (in the star's outer shells) and helium (in the core).
What are the atmospheres of the outer planets like?
they are thick and gaseous, mostly hydrogen and helium. Most have very strong winds.
What are the outer planets' cores made up of?
Terrestrial planets have a rock composition (and are also smaller), giant planets are made up from mostly hydrogen, helium and icy and rocky materials. However, the two giants, Jupiter and Saturn, have a very small inner core of icy and rocky materials and a larger outer core of hydrogen and helium. The two subgaints, Neptune and Uranus, have a larger inner core of icy and rocky material and a smaller outer layer of hydrogen, helium and icy materials.
Why are the outer planets less dense?
They are made of less dense materials. While the inner planets are made primarily of rock, the outer planets are made mostly of hydrogen and helium.
What are the outer planets mostly made from?
Gasses and ice . (:
Do Hydrogen and helium atoms make up fifty percent of atoms in outer space?
Hydrogen and helium make about 98% of the atoms in the solar system !
What element has 3 electrons in outer orbit?
Hydrogen ions in water have zero. If you just mean neutral atoms in gas phase, then hydrogen, helium and lithium.
What two atoms will have their outer energy level filled with two electrons?
Hydrogen and Helium both only need two valence electrons to fill their outer shell.
Which gas is found in outer planets?
Hydrogen and Helium
The outer planets are made of what two gases?
Helium and hydrogen =|
What are two gasses common to the outer planets?
Hydrogen and Helium
Is hydrogen can be over?
Although all the hydrogen in the sun and the stars will eventually be converted to helium or heavier elements, there is likely to be plenty of hydrogen atoms in outer space. This answer assumes, in line with current cosmological theories, that the universe does not end in a big crunch.
Why doesn't the He2 molecule form?
Atoms bond to get a full outer shell of electrons. For example, a hydrogen atom needs to gain 1 electron to achieve a full outer shell of 2. So it will bond with another hydrogen atoms and a pair of electrons is shared between them. Helium, however already has a full outer shell and so is most stable without bonds.
What type of bond would likely form with Helium and Helium atoms?
No bond at all, He has a complete outer shell
What star in the life cycle of stars fuses hydrogen and helium?
A "red giant" star can fuse both hydrogen (in the star's outer shells) and helium (in the core).
How many electrons does each atom desire?
Atoms do not actually have desires as such, although the metaphor can be useful. Atoms are more stable when they have a full outer electron shell. The smaller atoms, hydrogen, helium, lithium, and beryllium, can obtain a full outer shell with only two electrons in it. The heavier atoms require 8 electrons to have a full outer shell. That is known as the octet rule (an octet is a set of eight).
Why did the inner planets lose their hydrogen and helium?
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.
