Question

State whether the following statements are true or false :

(a) Newlands divided the elements into horizontal rows of eight elements each.

(b) According to Mendeleev’s periodic law, the properties of elements are a periodic function of their atomic numbers.

(c) The elements in a group have consecutive atomic numbers.

Answer 1

(a) False
Newlands divided the elements into horizontal rows of seven elements each.

(b) False
According to Mendeleev's periodic law, the properties of elements are a periodic function of their atomic masses.

(c) False
The elements in a period have consecutive atomic numbers.