Question
Chemistry Question on Classification of elements & periodicity in properties
In any period, the valency of an element with respect to oxygen
A
increases one by one from IA to VIIA
B
decreases one by one from IA to VIIA
C
increases one by one from IA to IVA and then decreases from VA to VIIA one by one
D
decreases one by one from IA to IVA and then increases from VA to VIIA one by one
Answer
increases one by one from IA to IVA and then decreases from VA to VIIA one by one
Explanation
Solution
As we move along the period, an electron is subsequently added in the outer most shell of the elements and valency increases. However when the number of valence electrons is more than ??, then the valency is given by valency = group no. - 8.