S and P Block Elements Test

Result

S and P Block Elements Test - 1

Score
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Weekly Quiz Competition

Question 1
1 / -0

Which of the following statement is correct regarding alkali metals

A
Cation is less stable than the atom

B
Cation is smaller than the atom

C
Size of cation and atom is the same

D
Cation is greater in size than the atom

Solution

After removal of an electron the effective nuclear charge per electron increases hence the size decreases.
Question 2
1 / -0

Valency electrons in alkali metals are

A
1

B
7

C
4

D
2

Solution

Alkali metals valence shell configuration = ns¹
Question 3
1 / -0

As compared to lithium, sodium reacts quickly with water because

A
Its molecular weight is less

B
It is stronger electronegative

C
It is stronger electropositive

D
It is a metal

Solution

On moving down the group electropositive character increases.
Question 4
1 / -0

Which of the following does not illustrate the anomalous properties of lithium

A
The melting point and boiling point of Li are comparatively high

B
Li is much softer than the other group I metals

C
Li forms a nitride Li₃N unlike group I metals

D
The ion of Li and its compounds are more heavily hydrated than those of the rest of the group

Solution

Li is much softer than the other group I metals. Actually Li is harder then other alkali metals