Question

Which element is located in period 3 of the periodic table?

A. He
B. K
C. C
D. Al

Answer 1

From the given options, the option (D) is correct. Because Al is the aluminium which is located in period 3 of the periodic table.

Step-by-step explanation:

We know that the 3rd period contains 8 elements which are as follows:

1. sodium
2. magnesium
3. aluminium
4. silicon
5. phosphorus
6. sulfur
7. chlorine, and
8. argon

The sodium and magnesium, the first 2 elements, are members of the s-block of the periodic table, while the rest of the members are the elements of the p-block.

Thus, from the given options, the option (D) is correct. Because Al is the aluminium which is located in period 3 of the periodic table.