Question

four elements P Q R S with atomic number 12 13 14 and 15 give answer of the following question which of the element will form a basic oxide

Answer 1

P (because they are in same period and metallic character decreases in a period due to increase in the nuclear charge).

Answer 2

surely magnesium's oxide {mgo} will be more basic in nature as we take a look on variation of periods in modern periodic table we can see...

on moving left to right nature of element's oxide decrease their pH.

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