Question

in an atom for how many electrons,the quantum number will be,n is equal to 3 l is equal to 2 m is equal to plus 2 and s isequal to plus one by two

Answer 1

According to your question n=3 which means third shell, i.e. 3s 3p 3d..
Now l=2 means d subshell. m=+2 comes only on d subshell..
s=+1/2 means 1 electron.
So finally the answer is 1

Answer 2

1 electron must be present