Question 1

Proton Number of Element X is 14. Determine the Period and Group of Element X in the Periodic Table of Elements.

Answer:

Step 1: Find the electron arrangement of Element X
Proton Number = Number of Protons = Number of Electrons
Therefore, number of electrons in Element X is 14
The electron arrangement for Element X is 2.8.4

Step 2: Number of electron shells and valence electrons
Based on electron arrangement
Number of electron shells = 3
Number of valence electrons = 4

Step 3: Period and Group
Period = Number of electron shells = 3
Group = Number of valence electrons = 4

OH WAIT!

Here is the reason why I said it is important to memorize the shape of Periodic Table.
There is no Group 4 in Period 3!
So we have to add 10 to Group 4
Therefore,
Element X is belong to Period 3 and Group 14