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Identify the correct staements . I. ...

Identify the correct staements .
I. Germanium exists only in traces
II. The order of electronegativity of Si, Ge, Sn, is `Sn gt Ge gt Si`

A

I, II only

B

II, III only

C

I, III only

D

I, II, III

Text Solution

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The correct Answer is:
C
I. Sillicon is the second most and carbon is the secenteenth most abundant element (by mass) in the earth curst. Ge, sn and Pb are present in trace amounts.
II. On moving down the group 14,
electronegativity decreases from C to Si and then become constant.
III. All the elements of group 14 are abailable in solid state. Thus, statemments (I) and (III) are correct .
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