Question

218. Read the following and answer any four questions from 18 () to 18 (4) 4x1=4
Modem periodic table has 18 vertical columns known as groups and 7 horizontal rows known
as periods. First period contains 2 clements second and third period contain 8 clements. 4th
and 5th period contains 18 clements and 6th and 7th pcriod contains 32 clements. The graph
is plotted between atomic number and atomic radius of group 17 and group 1 elements
300
250
(Cs (262)
Group 1
Rb(244)
K (231)
200
Atomic
radius
150 'Na (156)
Li(152)
100
CI (99)
50
F(72)
1(133)
Br (114)
Group 17
lowest
mes elecronogamais
Atomic number
(1) Which of the following has lowest elecronegativity?
(a) Cs
(b) Br
c) Na
(d) CI
(ii) Which among the following groups will have elements with largest atomic radii?
(a) Group-17 (b) Group-15 (c) Group-2 (d) Group-1
(in) Which of the following accept clectron easily?
(a)
(c) CI
(d) F
(iv) What happens to atomic radii in a group from top to bottom?
(a) Increases then decreases
(b) Decreases
(c) Increases
(d) Decreases then increases
() Which clement is responsible for increasing blood pressure?
(a) Ci
(6) 1
(c) Na
(d) F
​

Answer 1

Answer:

(i). option c.

(ii). option d.

(iii). option c.

(iv). option b.