Consider the following elements with their period number and valence electrons.
`{:("Elements","Period number","Total valence"e^(-)),(P,2,4),(Q,2,6),(R,3,7),(S,3,3),(T,3,6),(U,3,4):}`
According to the given informations, answer the following questions :
Choose incorrect statement :

Options

A. R exhibits maximum covalency among all elements given
B. Q does not exhibit variable covalency
C. R exhibits minimum covalency among all elements given
D. R and S combine each other and form `SR_(5)` type of compound

Answer

D

Explanation

`{:("Code element", "Actual element"),(P,C),(Q,O),(R,Cl),(S,Al),(T,S),(U,Si):}`
exhibits only covalency =2,
minimum covalency =1,
maximum covalency=7
R and S will combine as `SR_(3)` not as `SR_(5)`