1.

The atomic number of an element X is 8 and that of element Y is 4. Both these elements can exhibit a valency of : (a) 1 (b) 2 (c) 3 (d) 4

Answer»

The atomic number of an element X is 8 and that of element Y is 4. Both these elements can exhibit a valency of :

(a) 1

(b) 2

(c) 3

(d) 4



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