Question

Q1 - Symbol and valency of - (1) lithium (2) carbon (3) sodium (4) silicon


Q2- define - (a) valency (b) molecule (c) green house effect (d) globle warming

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Answer 1

Answer:

(1)lithium symbol-li

valency-2

(2)carbon symbol-c

valency-4

(3)-sodium symbol-Na

valency-1

(4)-silicon symbol-si

valency-4

Explanation:

for valency- there are 2 electrons at the outermost cell,so the valency- of lithium is 2.

and all the ans. are of this type and so on..