Question

Q.1 Fill in the blanks with the correct words from the brackets.

1. A molecule of an element is
[water /chlorine/ ammonia]

2. A radical with one atom of sulphur & three atoms of
oxygen is
[bisulphite/sulphate/sulphite].

3. An element with variable valency is [ sodium/copper/calcium]

4. The formula of aluminium sulphate is [AISO4/ Al2(SO4)3/ A13(SO4)2]

5. The element lithium in the Modern Periodic Table with valency 1 belongs to the group​

Answer 1

Answer:

AI2 (SO4) 3

Explanation: