Question

Identify the collect statements
I) Germanium exists only in traces.
II) The order of electronegativity of $Si,Ge,Sn$ is $Sn>Ge>Si$.
III) All group $14$ elements are available in solid state

• A. I, II only
• B. II, III only
• C. I , III only
• D. I, II , III

Answer 1

Answer: (C)

I. Silicon is the second most and carbon is the seventeenth most abundant element (by mass) in the earth crust. $Ge,Sn$ 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 available in solid state. Thus, statements (I) and (III) are correct.