Question

How many electrons are there in outermost orbit of helium ?
(A) 8
(B) 4
(C) 2
(D) 1

Answer 1

the correct answer is -

(C) 2

Answer 2

There are 2 electrons in the ,outermost orbit of helium. Because it's atomic number is 2 and mass number is 4.

Hope this helps you.