The first shell can hold up to two electrons maximum.
From the periodic table, we can find that hydrogen has only one electron occupying the first shell. Therefore, hydrogen would require an additional one electron to fill up the first shell.
Answer: A,B, and D
Explanation: Might be wrong wait for some else for better results or if you want to do it
The equilibrium concentration of N₂ : 1.992
<h3>Further explanation</h3>
Given
Kc = 6.0 x 10⁻² at 500°C
0.253 M H₂ and 0.044 M NH₃
Reaction
3H₂(g) + N₂(g) = 2NH₃(g)
Required
The equilibrium concentration of N₂
Solution
Kc for the reaction :
Answer:
They each contributed to the development of the atomic theory
Explanation:
They each contributed to the development of the atomic theory. ... Bohr said there was no certain path for electrons, and in the current theory, the exact path cannot be predicted. But there is an electron cloud.