Question

In potassium the order of energy level for 19th electron is

Answer 1

Answer:

Explanation:

(n+l) for 4s=4+0=4

(n+l) for 3d=3+2=5

This energy level  3d>4s

Answer 2

In potassium the order of energy level for 19th electron is N.

Explanation:

Atomic number of potassium is 19 and its electronic distribution is 2, 8, 8, 1. This means that there are 2 electrons present in its K shell, 8 electrons present in its L shell, 8 electrons present in its M shell, and 1 electron present in its N shell.

In a potassium atom, N shell is the last shell and it is also the valence shell of a potassium atom. Therefore, the order of energy level for 19th electron is N.

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