Question

pier 1
1. In the periodic table, alkali metals are placed in the group:
(a) 1
(b) 11
(c) 17
(d) 18
2 An alkaline earth metal is :
(a) Palarium
(6) Calcium
(c) Lead
(a) Copper
3 The number of electrons present in the valence shell of halogen is :
(a) 1
(b) 3
(c) 5
d 7
4 If an element A belongs to period 3 and Group II then it will have
(a) 3 shells and 2 valence electrons
(b) 2 shells and 3 valence electrons
(c) 3 shells and 3 valence electrons
(d) 2 shells and 2 valence electrons
5. On moving from left to nght across a period of the periodic table, the atomic size:
(a) Decreases
(6) Increases
(d) Remains the same
(d) Sometimes increases and sometimes decreases
6
On moving from left to right across a period of the penodic table, the non-metallic
character of the elements:
(a) Decreases
(6) Increases
(c) Remains the same
(d) Depends on the period
7. On moving from left to right across a period of the periodic table, the ionization potential
(a) Goes
up
and down
KDXH Decreases
(c) Increases
(d) Remains the same
Ionisation potential increases over a penod from left to right because the
(a) Atomic radius increases and nuclear charge increases
6) Atomic radius decreases and nuclear charge decreases
(c) Atomic radius increases and nuclear charge deceases
(d) Atomic radius decreases and nuclear charge increases
On moving from left to right across a period of the periodic table, the electron affinity of
the eluments in groups 1 to 7:
(a) Goes up and then down
Decreases and then increases
(c) Increases
(d) Decreases
10. An element in period 3 whose electron affinity is vero :
( Neon
(Sulphur
R​

Answer 1

Answer:

1. a) 1

2.b) Calcium

3.d)7

4.a) three shells and two valence electrons

5.a) Decreases

6.b) Increases

7.b) Increases

8.d) atomic radius decreases and nuclear charge increases

9.c) Increases

10. Argon

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Answer 2

Here is the answer

1. Option (a) 1.

2.(b) Calcium .

3.(d) 7 .

4.(a) 3 shells and 2 valence electrons.

5.(a) decrease.

6.(b) increases.

7.(c) increases.

8. (d) Atomic charge decrease and nuclear charge increase.

9. (c) increases.

10. Argon .

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