Magic Numbers#!#Group wise configuration

An element 'X' has mass number 35 and number of neutrons 18. Write atomic number and electronic configuration of 'X'. Also write group number, period number and valency of 'X'.

An element of group 15 has atomic number 15. Write the number of shells in its configuration. Write its configuration and find its valency. Examine if this element will have metallic properties or not.

A metal has electronic configuration [Ar]^(18)3d^7 4s^2 .On the basis of this electronic configuration find out the group number.

Element of group 14 (IV A) have outer electronic configuration of

The group 15 element having inner electronic configuration as of argon is

To which block of the periodic table group 13 belongs.What is the general outer electronic configuration of this group?

Identify the group nad valency of the elements having atomic number 119. Also predict the outermost electronic configuration and write the general formula of its oxide.