Question

Give the ground-state electron configuration for silicon (SiSi) using noble-gas shorthand. For example, [Ar]4s23d8[Ar]4s23d8 would be entered as [Ar]4s^23d^8.
Give the ground-state electron configuration for copper (Cu) using noble-gas shorthand. For example, [Ar]4s23d8 would be entered as [Ar]4s 23d 8.
The electron configuration of the carbon atom represented by the orbital is
C = 1s 2s 2p
This electron configuration can be written as
1s2 2s2 2p2
where 1s, 2s. and 2p are the occupied subshells, and the superscript "2" is the number of electrons in each of these subshells. Use the rules for determining electron configurations to write the electron configuration for Ca.

Answer 1

Explanation:

The full ground state electron configuration for silicon is given as;

1s² 2s² 2p⁶ 3s² 3p²

The closest noble gas to Si is Ne. The Noble gas shorthand is given as;

[Ne] 3s² 3p²

The full ground state electron configuration for copper is given as;

1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s¹

The closest noble gas to Cu is Ar. The Noble gas shorthand is given as;

[Ar] 3d¹⁰ 4s¹

The electronic configuration for Ca is given as;

1s² 2s² 2p⁶ 3s² 3p⁶ 4s²