The element which has the maximum number of valence electrons is :

(a) Na (b) P (c) Si (d) Al

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Solution

(b) P.
Phosphorus (P) has the maximum number of valence electrons, equal to 5.
Electronic configuration of P (15): K = 2 L = 8 M = 5

Sodium (Na) has 1, Silicon has 4 and Aluminium (Al) has 3.

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The element which has the maximum number of valence electrons is : (a) Na (b) P (c) Si (d) Al

(b) P. Phosphorus (P) has the maximum number of valence electrons, equal to 5. Electronic configuration of P (15): K = 2 L = 8 M = 5 Sodium (Na) has 1, Silicon has 4 and Aluminium (Al) has 3.

The element which has the maximum number of valence electrons is :

(a) Na (b) P (c) Si (d) Al

(b) P.
Phosphorus (P) has the maximum number of valence electrons, equal to 5.
Electronic configuration of P (15): K = 2 L = 8 M = 5

Sodium (Na) has 1, Silicon has 4 and Aluminium (Al) has 3.