i. Dobereiner : Triad : : Newlands law :……… ii. Mendeleev’s periodic table : Atomic mass :: Modern periodic table :……..

Question

By observing the correlation in the first pair, complete the second pair:

i. Dobereiner : Triad : : Newlands law :………

ii. Mendeleev’s periodic table : Atomic mass :: Modern periodic table :……..

iii. Group-1 : Alkali metals: :…….: Halogens.

iv. Solid : Iodine : : …….. : Bromine.

v. Chlorine : 2, 8, 7 :: Fluorine : ……..

vi. Horizontal row Periods : :…….: Groups.

Answer 1

i. Octaves

ii. Atomic number

iii. Group 17

iv. Liquid

v. 2, 7

vi. Vertical columns