Question

iii) The atomic number of elements A,B,C, D and E are given below
Element
A
B
С
D
Atomic
7
10
12
4
number
Which two elements are chemically similar
a. A and B
b. Band C
c. Cand D
d. D and E
iv) From the above table, answer the following questions:-
Which is an inert gas?
а. С
b. B
C. D​

Answer 1

Answer:

iii)c

iv)b

Explanation:

10-Argon, it is an inert gas

magnesium and berilium are chemically similar, because they situated in a same group