An element ‘X’ has atomic number 13.
(a) Write its electronic configuration.
(b) State the group to which ‘X’ belongs.
(c) Is ‘X’ a metal or a non-metal?

The element 'M' has an atomic number 11.

(a) What is it's electronic configuration?
(b) Which group does 'M' belong to?
(c) Is 'M' a metal or a non-metal?
(d) Write the formula of its chloride.

Element P has atomic number 19.To which group and period, does P belong ? Is it a metal or a non-metal ? Why ?

An element A atomic number 7 mass number 14

B electronic configuration 2, 8, 8

C electrons 13, neutrons 14

D Protons 18 neutrons 22

E electronic configuration 2, 8, 8, 1

State (i) valency of each element (ii) which one is a metal (iii) which is a non-metal (iv) which is an inert gas.

An element A has 2 electrons in its fourth shell.State:

(a) its atomic number

(b) its electronic configuration

(c) its valency

(d) position in the periodic table

(e) is it a metal or non-metal

(f) is it an oxidising or reducing agent.