How many electron in an atom may have atomic no 12 ?

How many electrons in an atom can have n = 4, l =2 ,m= -2 and s = +1/2 ?

Consider the argon atom. For how many electrons does this atom have m_(l) = 1 ?

Write the distribution of electrons in an atom of element whose atomic number is 18. What is special about the outermost electron shell (or valence shell) of the atom of this element ?

No two electrons in an atom will have all the four quantum numbers same. This statement is known as

An element has atomic number 13 and an atomic mass of 27. (a) How many electrons are there in atom of the element ?

How many electrons are given by each atom of nitrogen to form nitrogen gas?

How many electrons, protons and neutrons are there in a nucleous of atomic number 11 and mass number 24?

How many electrons, protons and neutrons are there in 12 g of "_6C^12 and in 14 g of "_6C^14 ?