Classification of Elements and Periodicity in Properties Test

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Classification of Elements and Periodicity in Properties Test - 53

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Weekly Quiz Competition

Question 1
1 / -0

To which of the following atom, the attachment of electron is most difficult?

A
Radon

B
Nitrogen

C
Oxygen

D
Radium

Solution
Question 2
1 / -0

Element A and B with their respective electronic configurations $$3d^{10}4s^{1}$$ and $$4d^{10}5s^{1}$$ in their outermost shell are

A
Both coinage metals

B
Both non-metals

C
A is a non-metal and B is coinage metal

D
A is a coinage metal and B is non-metal

Solution

$$3d^{10}4s^{1}$$ this belongs to copper electronic configuration.
and $$4d^{10}5s^{1}$$ this belongs to silver electronic configuration.
so both are coinage metals.
Question 3
1 / -0

Mark the group which has maximum number of element in Mendeleev's periodic table:

A
$$I$$

B
$$II$$

C
$$III$$

D
$$IV$$

Solution
Question 4
1 / -0

Refer to change in the properties of elements on moving from left to right across a period of the Periodic Table. For each property, choose the correct answer.
The electronegativity :

A
depends on the number of valence electrons

B
remains the same

C
decreases

D
increases

Solution
Question 5
1 / -0

The first electron affinity of C, N and O will be of the order:

A
$$C < N < O$$

B
$$N < C < O$$

C
$$C < O < N$$

D
$$O < N < C$$

Solution

O > C > N
In periodic table as we move from left to right electron affinity increase due to increase in nuclear charge (Z) but nitrogen has less electron affinity as it has half filled p orbital.
Question 6
1 / -0

Metal T reacts with water to produce a colourless solution. A white precipitate is produced when this colourless solution is mixed with aqueous sulfuric acid. What is metal T?

A
Barium

B
Magnesium

C
Potassium

D
Sodium

Solution

Solution:- (A) Barium
$$Ba + 2 {H}_{2}O \xrightarrow[-{H}_{2}]{} \underset{\left( \text{Colourless} \right)}{Ba{\left( OH \right)}_{2}} \xrightarrow{{H}_{2}S{O}_{4}} \underset{\left( \text{White ppt.} \right)}{BaS{O}_{4}}$$
Question 7
1 / -0

When burned, sulfur forms a gaseous product X which can be oxidised to produce a gas Y. Gas Y reacts with water to produce a product Z.
Which row correctly shows the oxidation states of sulfur in X, Y and Z?

X Y Z
A $$-2$$ $$+4$$ $$+4$$
B $$-2$$ $$+4$$ $$+6$$
C $$+4$$ $$+6$$ $$+4$$
D $$+4$$ $$+6$$ $$+6$$

A
A

B
B

C
C

D
D

Solution

$$\text{X=+4}$$
$$\text{Y=+6}$$
$$\text{Z=+6}$$
Question 8
1 / -0

Which pair of elements will react together most violently?

A
Chlorine and lithium

B
Chlorine and potassium

C
Iodine and lithium

D
Iodine and potassium

Solution

Solution:- (B) Chlorine and potassium
Potassium belongs to group $$1$$ and chlorine belongs to group $$2$$.
As far as the elements are placed in periodic table, the more violently they reacts to each other.
Also the reactivity in metals increases on moving down the group while that of non-metals decreases on moving down the group.
Hence chlorine and potassium will react more violently.
Question 9
1 / -0

Which in each has higher electron affinity?

A
F or $$Cl^-$$

B
O or $$O^-$$

C
$$Na^+$$ or F

D
F or $$F^-$$
Question 10
1 / -0

Electronic configuration of chalcogens in their outermost orbit is

A
$${s^2}{p^3}$$

B
$${s^2}{p^5}$$

C
$${s^2}{p^4}$$

D
$${s^2}{p^6}$$

Solution

Chalcogen belongs to oxygen family so it has $$s^{2} p^{4}$$ electronic configuration.

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	X	Y	Z
A	$$-2$$	$$+4$$	$$+4$$
B	$$-2$$	$$+4$$	$$+6$$
C	$$+4$$	$$+6$$	$$+4$$
D	$$+4$$	$$+6$$	$$+6$$

Classification of Elements and Periodicity in Properties Test - 53

Result

Classification of Elements and Periodicity in Properties Test - 53

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SHARING IS CARING

Question 1

Radon

Nitrogen

Oxygen

Radium

Solution

Question 2

Both coinage metals

Both non-metals

A is a non-metal and B is coinage metal

A is a coinage metal and B is non-metal

Solution

Question 3

$$I$$

$$II$$

$$III$$

$$IV$$

Solution

Question 4

depends on the number of valence electrons

remains the same

decreases

increases

Solution

Question 5

$$C < N < O$$

$$N < C < O$$

$$C < O < N$$

$$O < N < C$$

Solution

Question 6

Barium

Magnesium

Potassium

Sodium

Solution

Question 7

A

B

C

D

Solution

Question 8

Chlorine and lithium

Chlorine and potassium

Iodine and lithium

Iodine and potassium

Solution

Question 9

F or $$Cl^-$$

O or $$O^-$$

$$Na^+$$ or F

F or $$F^-$$

Question 10

$${s^2}{p^3}$$

$${s^2}{p^5}$$

$${s^2}{p^4}$$

$${s^2}{p^6}$$

Solution

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