Symbol of Sodium is

Si is symbol of

Name the element which has electronic configuration as 2,8,3

The elements which has valency of 0 (zero) are

The symbol of Nitrogen is

The atoms of elements that has charge of -2 are

When chlorine looses one electron the ion formed is called

When Iron (Fe) loses two electron it forms ion known as

Name the elements that looses two electrons to have stable octet configuraiton

Valency of Aluminum ion is _______

The elments that have valency of 4 are

Element having "0" neutron is

Number of electrons of Nitrogen are

Number of Neutrons of Silicon are

Calcium has same valency as