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The first three elements of Group 1 have...

The first three elements of Group 1 have the following atomic structures
(a) Lithium : `3p, 4n, 2, 1` electrons
(b) Sodium: `11p, 12n, 2, 8, 1` electrons
(c) Potassium: `19p, 20n, 2, 8, 8, 1` electrons
which of the following features causes them to have similar properties?

A

The same number of protons

B

More protons than electrons

C

Two electrons in the first shell

D

One electron in the outermost shell.

Text Solution

Verified by Experts

The correct Answer is:
D
One electron in the outermost shell
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