Question

which of the following statement is correct regarding velocity and speed of a moving body
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Answer 1

Explanation:

Speed of a moving body is always higher than velocity. Speed of a moving body is its velocity in a given direction. Velocity of a moving body is its speed in a given direction.

Answer 2

Valency of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecules. Carbon has four valence electrons and here a valence of carbon is four.

Electronic configuration of carbon (C = 6) = 1s2 2s2 2p2 = [He]  2s2 2p2

The valency of Carbon depends on the following factors:

To complete the octet structure, either carbon gains four electrons or lose four electrons.

However, if Carbon gains electrons then it would be hard for the nucleusdditional electrons as carbon at00

If Carbon losses its electrons then it required a large amount of energy to remove four electrons of the nucleus.

Carbon makes four covalent bonds and attains the noble gas configuration by sharing it’s valence electrons.