If Dobereiner is related with 'law of triads', then Newlands is related with __________.

(a)

Modern periodic law

(b)

Hund's rule

(c)

Law of octaves

(d)

Pauli's Exclusion principle

Modern periodic law states that the physical and chemical properties of elements are the periodic functions of their__________

(a)

atomic numbers

(b)

atomic masses

(c)

similarities

(d)

anomalies

Elements in the modern periodic table are arranged in__________ groups and __________ periods.

(a)

7,18

(b)

18,7

(c)

17,8

(d)

8, 17

The increasing order of the energy of subshells is

(a)

s>p>d>f

(b)

s

(c)

p

(d)

p

If the electronic configuration of an element is 1s² 2s² 2p⁶ 3s² 3p¹, then it will occupy___________ block of the periodic table.

(a)

s

(b)

p

(c)

d

(d)

f