A. 2
B. 3
C. 5
D. 6
Correct Answer: Option B
B. 3
Explanation
The highest number of electrons s-block can contain is 2, and there are 2 constant electrons in every atom. Now to know the number of orbit in s-block is to divide 2 by 2 which gives 1. So there is one orbital in s-sub shell.
Moreso, to find how many orbit p-subshell contain first remember that the highest electrons in p orbital is 6 and also note that there are 2 constant electrons in every atom. Hence, you can find how many orbital in p subshell by dividing 6 by 2 which gives 3. That is to say that there are 3 orbitals in p sub-shell.
Corollary, in d sub-shell, the maximum electrons is 10 and remember the constant 2 electrons. Then divide 10 by 2 to give 5. Hence, there are 5 orbitals in d-block.
