Question

An atom of an element 'X' has 2 electrons in its N shell.

i) State it's electronic configuration
ii) Is it a metal or an non metal?
iii) Write the atomic number
iv)Write the formula of its Chloride
v) what kind of compound is this chloride?

Don't spam​

Answer 1

Answer:

A K L M N

2 8 8 2

B Metal and name of the metal is Calcium

C 20

D CaCl2

E Ionic Compounds

Answer 2

It is given that an atom of an element 'X' has 2 electrons in it's N shell. [ 4th shell ]

Among all elements, only the atom of Calcium has 2 electrons in it's N shell. Thus the element 'X' is Calcium.

(i) Electronic Configuation of Calcium

is 2,8,8,2

(ii) Calcium is a metal.

(iii) It's atomic number is 20.

(iv) The formula of it's chloride is CaCl₂ .

(v) CaCl₂ [Calcium Chloride] is an

ionic compound.

Some Information about Calcium :-

• Calcium is a chemical element whose symbol is Ca and atomic number is 20.

• Atomic mass of Calcium is nearly 40u.

• The location of Calcium in Periodic Table is :-

→ Group - 2

→ Period - 4