The atomic number of elements A, B, C, D and E are given below
Element |
A |
B |
C |
D |
E |
Atomic no. |
7 |
10 |
12 |
4 |
19 |
From the above table, answer the following questions :
(i) Which two elements are chemically similar ?
(ii) Which is an inert gas ?
(iii) Which element belongs to 3rd period of periodic table ?
(iv) Which element among these is a non-metal ?