The given table shows a part of the periodic table

`P, Q, R, T` and `U` are respectively

Options

A. `Mg, O, Ne, P, Ar`
B. `O, Mg, Ar, P, Ne`
C. `Mg, O, Ar, P, Ne`
D. `O, Mg, Ne, P, Ar`

Answer

A

Explanation

Element .P. belongs to group 2 and period 3, so it should be magnesium (Mg).
Element .Q. belongs to group 16 and period 2, so it should be oxygen (O).
Element .R. belongs to group 18 (noble gases) and period 2, so it should be neon (Ne).
Element .T. belongs to group 15 and period 3, so it should be phosphorus (P).
Element .U. belongs to group 18 and period 3, so it should be argon (Ar).