Question

The atomic numbers of elements P, Q, R, S and T are given below.


Element. P Q R S T

Atomic number 7 10 12 4 19


From the above table, answer the following questions.

(a) Which element among these is a non-metal ?

(b) Which element belongs to 3rd period of periodic table

reply please​

Answer 1

Answer:

7=nitrogen

10=neon

12=magnesium

4=beryllium

19=potassium

Explanation:

a.neon

b.magnesium

Answer 2

Answer:

Explanation:a- 7- nitrogen

B-19