If:
(i) energy of the subshell depends only on 'n' instead of 'n + l'
(ii) each orbital can accommodate a maximum of up to one electron
then for an element having an atomic number is 33, the correct statement is:

1. The group number is 5 and the period number is 4.

2. The period number is 5.

3. The last shell has only 1 electron.

4. The last electron is in the 4th shell.