How does the ground state electron configuration of the hydrogen atom differ from that of a ground state helium

H₁ = 1s¹

He₂ = 1s²

Explanation:

Electronic configuration of hydrogen.

H₁ = 1s¹

Electronic configuration of helium.

He₂ = 1s²

The helium consist of complete out most electronic shell configuration and  stable. While hydrogen consist of one electron in 1s sub shell.

Properties of hydrogen:

1. Its atomic number is one and mass is 1 g/mol.

2. It is non metal.

3. It is colorless and odorless gas.

4. Hydrogen can gain  or lose the one electron from and form a compound  while helium is non reactive.

5. At high temperature its snow like crystals are formed.

Properties of helium:

1. Its atomic mass is 4 g /mol and atomic number is 2.

2. It is inert gas

3. It is colorless and odorless gas.

4. It has low density and low, low boiling point and low solubility.

5. It was the first gas used in the filling of balloons.

the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .

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