The p-Block Elements Test

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The p-Block Elements Test - 61

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following represents the outermost shell electronic configuration of halogens?

A
$$ns^2np^3$$

B
$$ns^2np^6$$

C
$$ns^2 np^4$$

D
$$ns^2np^5$$

Solution

The general electronic configuration of valence shell of Halogens is $$ns^2np^5$$.
Hence, Option "D" is the correct answer.
Question 2
1 / -0

Every noble gas atom

A
has a saturated outermost shell

B
has one electron in outermost shell

C
has eight electrons is outer shell

D
has two electrons in outermost shell

Solution

Every noble gas atom has a saturated outermost shell.
Hence, Option "A" is the correct answer.
Question 3
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Which statement is not correct for nitrogen?

A
It has a small size

B
It does not radily react with $$O_2$$

C
It is a typical non-metal

D
$$d$$ - orbitals are available for bonding

Solution

$$N_7 \to 1s^2, 2s^2, 2p^3$$

$$d-$$ orbitals are absent in nitrogen.
Question 4
1 / -0

White Phosphorus contains

A
$$P_5$$ molecules

B
$$P_4$$ molecules

C
$$P_6$$ molecules

D
$$P_2$$ molecules

Solution

White Phosphorus contains $$P_4$$ molecules.
Hence, Option "B" is the correct answer.
Question 5
1 / -0

The last member of Group 18 is

A
Helium

B
Neon

C
Argon

D
Radon

Solution

Radon is the last member of Periodic Table till now i.e. Atomic No. 118 and is also the last member of Group 18.
Hence, Option "D" is the correct answer.
Question 6
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Which of the following inert gas liquifies easily?

A
$$Kr$$

B
$$He$$

C
$$Ne$$

D
$$Ar$$

Solution

The maximum temperature at which gas can be liquified is called its critical temperature. The gas which has a high boiling point will change into liquid first and so critical temperature of the gas will be more. $$Kr$$ gas will liquify easily among the given gas since it has highest boiling point because of its mass.
Question 7
1 / -0

Which of the following statements is correct?

A
Only chlorine and bromine form oxy acids

B
All halogens form oxy acids

C
All halogens except fluorine form oxy acids

D
Only iodine form oxy acids

Solution

All halogens form oxy acids.
Hence, Option "B" is the correct answer.
Question 8
1 / -0

Which of the following substances when boiled with caustic sodasolution will evolve ammonia

A
Ethylamine

B
Aniline

C
Acetamide

D
Acetoxime

Solution

$$CH_3CONH_2+NaOH\xrightarrow[]{Boil}CH_3COONa+NH_3$$
Acetamide

Option C is correct.
Question 9
1 / -0

Which compounds is prepared by the following reaction:
$$\underset { (2:1\ volume \ ratio) }{ Xe+F_{2} }\xrightarrow [ 673\ K ]{ Ni } $$

A
$$XeF_{4}$$

B
$$XeF_{2}$$

C
$$XeF_{6}$$

D
None of these.

Solution

$$\underset{(2:1)}{Xe+F_{2}}\xrightarrow [ 673\ K ]{ Ni } XeF_{2}$$
Question 10
1 / -0

The incorrect statement regarding $$15^{th}$$ group hydrides $$(EH_{3}) . [E = N, P, As, Sb, Bi]$$

A
$$NH_{3} > PH_{3} > AsH_{3} > SbH_{3} > BiH_{3} :$$ Thermal stability

B
$$N - H > P - H > As - H > Sb - H > Bi - H : E - H$$ bond dissociation enthalpy

C
$$NH_{3} > PH_{3} > AsH_{3} > SbH_{3} > BiH_{3} :$$ Reducing character

D
$$NH_{3} > PH_{3} > AsH_{3} > SbH_{3} > BiH_{3} :$$ Basicity

Solution

Reducing character $$\propto \dfrac{1}{'E - H' \,bond \,dissociation \,enthalpy}$$

Hence, correct reducing character is $$NH_{3} < PH_{3} < AsH_{3} < SbH_{3} < BiH_{3}.$$

Hence, Option "C" is the correct answer.

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Re-Attempt Weekly Quiz Competition

The p-Block Elements Test - 61

Result

The p-Block Elements Test - 61

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SHARING IS CARING

Question 1

$$ns^2np^3$$

$$ns^2np^6$$

$$ns^2 np^4$$

$$ns^2np^5$$

Solution

Question 2

has a saturated outermost shell

has one electron in outermost shell

has eight electrons is outer shell

has two electrons in outermost shell

Solution

Question 3

It has a small size

It does not radily react with $$O_2$$

It is a typical non-metal

$$d$$ - orbitals are available for bonding

Solution

Question 4

$$P_5$$ molecules

$$P_4$$ molecules

$$P_6$$ molecules

$$P_2$$ molecules

Solution

Question 5

Helium

Neon

Argon

Radon

Solution

Question 6

$$Kr$$

$$He$$

$$Ne$$

$$Ar$$

Solution

Question 7

Only chlorine and bromine form oxy acids

All halogens form oxy acids

All halogens except fluorine form oxy acids

Only iodine form oxy acids

Solution

Question 8

Ethylamine

Aniline

Acetamide

Acetoxime

Solution

Question 9

$$XeF_{4}$$

$$XeF_{2}$$

$$XeF_{6}$$

None of these.

Solution

Question 10

$$NH_{3} > PH_{3} > AsH_{3} > SbH_{3} > BiH_{3} :$$ Thermal stability

$$N - H > P - H > As - H > Sb - H > Bi - H : E - H$$ bond dissociation enthalpy

$$NH_{3} > PH_{3} > AsH_{3} > SbH_{3} > BiH_{3} :$$ Reducing character

$$NH_{3} > PH_{3} > AsH_{3} > SbH_{3} > BiH_{3} :$$ Basicity

Solution

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