12. Incorrect among the following is/are (a) Number of electrons having m = 0 in Na are 7(b) Energy of 4s orbital is more than 3d in H-atom(C) Energy of 2s orbital in O is more than carbon(1) (a) only(2) (b) only(3) (a) & (b) only(4) (c) only

12. Incorrect among the following is/are (a) Number of electrons hav

1.	12. Incorrect among the following is/are (a) Number of electrons having m = 0 in Na are 7(b) Energy of 4s orbital is more than 3d in H-atom(C) Energy of 2s orbital in O is more than carbon(1) (a) only(2) (b) only(3) (a) & (b) only(4) (c) only
Answer» (a) and (B) only......