Question

1) A covalent molecule of oxygen contains____ (1/2/3/4) lone pair of electrons in
the outer shell of each of the oxygen atoms which are not involved in sharing
ii) Zinc is___
(more/less) reactive than aluminium
iii) In double decomposition reactions between two compounds base and acid to give
salt and water there is an interchange of___
(ions/radicals/molecules)
iv) Modern periodic table has____ (eight/eighteen) groups
v) Positive radicals are called__ (basic/acidic) radicals​

Answer 1

Answer:

1--- 2

2--- less

3---- ions

4----- 8

5------- acidic