Answer:
D. Ar.
Explanation:
The<em> </em><em>electron configuration</em><em> of the atom reflects how the electrons are distributed among the various atomic orbitals</em>. Just as for neutral atoms, we use the Pauli exclusion principle and Hund’s rule in writing the ground-state electron configurations of cations and anions.
<u>Ions formed from atoms of most representative elements have the noble-gas outer electron configuration of ns²np⁶.</u> In the formation of a cation from the atom of a representative element, one or more electrons are removed from the highest occupied n shell. The electron configuration of calcium and its ion is as follows:
Ca: [Ar]4s² Ca²⁺ : [Ar]
Answer:
Ne 20: 10
and
Ne 22: 12
Explanation:
Ne-20:
N = A - Z = 20 - 10 = 10 neutrons
Ne-22:
N = A - Z = 22 - 10 = 12 neutrons
N: number of neutrons
A: mass number
Z: atomic number
Answer:
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I would say that it's true