How are electrons arranged around an atom?

Viewed simply, electrons are arranged in shells around an atom's nucleus. Electrons closest to the nucleus will have the lowest energy. Electrons further away from the nucleus will have higher energy.

Electrons are placed in the lower energy level first and when this is completely filled, we move on to the second energy level and so on. The way the electrons are arranged in an atom is called the atom's electronic structure or electronic configuration. The maximum number of electrons that the first shell can contain is 2.

Explanation:

the answer is 75.0%.

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock