Question

If the electronic configuration of an atom X is 2,8,1, calculate the total number of electrons, valency and write the

name of the atom.​

Answer 1

Step-by-step explanation:

As the atomic configuration is 2,8,1 The atomic number is 2+8+1=11 (Total no of electrons and protons are equal in a neutral atom)

So the element is Sodium (Na)

So the Total no of e- are 11

And valency is no of e- in outermost orbit so 1