Identify and name the metals out of the following elements whose electronic configurations are given below.
(a) 2, 8, 2
(b) 2, 8, 1
(c) 2, 8, 7
(d) 2, 1

AcademicChemistryNCERTClass 10

(a) 2, 8, 2 – Magnesium
The number of electrons for the Mg atom are 12 electrons.

(b) 2, 8, 1 – Sodium
The atomic number of Sodium is 11.

(c) 2, 8, 7 – Chlorine
Chlorine has an atomic number of 17. 

(d) 2, 1 – Lithium
Lithium has an atomic number of 3.
raja
Updated on 10-Oct-2022 13:28:23

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