Periodic Properties of Elements Test

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Periodic Properties of Elements Test - 1

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Weekly Quiz Competition

Question 1
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What is the collective name given to the elements of group 1, 2, 13, 14, 15, 16 , 17 and 18?

A
Noble elements

B
Alkali earth metals

C
Transition elements

D
Representative elements

Solution

These elements of s and p blocks are collectively called representative elements.
Question 2
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Which of the following elements do not belong to the same group, but show chemical similarities?

A
Mg, Ca

B
K, Rb

C
Be, Al

D
B, Al

Solution

Be belongs to group 2 and Al belongs to group 13, but they have chemical similarity due to diagonal relationship.
Question 3
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Which of the following elements is not correctly matched with its family?

A
₂₄Cu- coinage

B
₃₆Ba- alkaline earth

C
₃₀Zn- alkaline metal

D
₃₀Xe- Noble gas

Solution

Zinc is a transition metal and belongs to d- block of periodic table
Question 4
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Which of the following isoelectronic ions has the lowest ionisation energy?

A
K⁺

B
Ca⁺⁺

C
Cl^-

D
SO₄ ^--

Solution

It has higher negative charge, so will have lower ionisation energy.
Question 5
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Which of the following processes requires the highest energy?

A
Al (g) → Al⁺ (g) + e^-

B
Al²⁺ (g) → Al³⁺ (g) + e^-

C
Al⁺ (g) → Al²⁺ (g) + e^-

D
Energy required is the same in all the three processes.

Solution

Ionization energy increases with the increase in the effective nuclear charge.
IE₁ < IE₂ < IE₃
Question 6
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From the ground state of electronic configuration of various electrons, which will have the highest second ionisation energy?

A
1s², 2s², 2p⁶, 3s²

B
1s², 2s², 2p⁶, 3s¹

C
1s², 2s², 2p⁶

D
1s², 2s², 2p⁵

Solution

The removal of second electron will be from completely filled p-orbital, so it will need the highest energy.
Question 7
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The ionisation energy of the element is the measure of

A
The power of an atom to attract the shared pair of electron

B
The energy required to remove the most loosely bound electron from gaseous atom

C
Energy released when the atom forms uninegative ion

D
Tendency of an electron to undergo hydration

Solution

Higher IE means the electrons are more attracted towards the nucleus of the atom.
Question 8
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Which of the following processes refers to IE₂?

A
X (g) → X²⁺ (g)

B
X ⁺(g) → X²⁺ (g)

C
X ⁺(aq) → X²⁺ (g)

D
X (g) → X ^- (g)

Solution

It refers to the conversion of unipositive ion to a dipositive ion in the gaseous state.
Question 9
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On moving down the group, the ionisation energy decreases because of

A
increase in nuclear charge

B
decrease in atomic size

C
increase in nuclear charge and decrease in shielding effect

D
increase in atomic size and increase in sheilding effect

Solution

Both these factors decrease the attractive pull of nucleus on outer most electrons and facilitate their removal.
Question 10
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Which of the following configurations indicates fourth transition metal?

A
1s² 2s² 2p⁶ 3s² 3p⁶ 4s²

B
1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁴ 4s²

C
1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁴

D
1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵ 4s¹

Solution

This correctly represents the fourth element with singly filled orbitals.
Question 11
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Which of the following has the highest ionisation energy?

A
₁₁Na

B
₁₉ K

C
₁₂ Mg

D
₃₇Rb

Solution

It has completely filled s orbital,so removal of electron from it is harder.
Question 12
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In which of the following pairs is the ionisation energy of first species less than that of second?

A
N, O

B
Be, B

C
Li⁺, Be⁺

D
S, P

Solution

P has higher IE due to stable half - filled configuration.

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Periodic Properties of Elements Test - 1

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Question 1

Noble elements

Alkali earth metals

Transition elements

Representative elements

Solution

Question 2

Mg, Ca

K, Rb

Be, Al

B, Al

Solution

Question 3

24Cu- coinage

36Ba- alkaline earth

30Zn- alkaline metal

30Xe- Noble gas

Solution

Question 4

K+

Ca++

Cl-

SO4 --

Solution

Question 5

Al (g) → Al+ (g) + e-

Al2+ (g) → Al3+ (g) + e-

Al+ (g) → Al2+ (g) + e-

Energy required is the same in all the three processes.

Solution

Question 6

1s2, 2s2, 2p6, 3s2

1s2, 2s2, 2p6, 3s1

1s2, 2s2, 2p6

1s2, 2s2, 2p5

Solution

Question 7

The power of an atom to attract the shared pair of electron

The energy required to remove the most loosely bound electron from gaseous atom

Energy released when the atom forms uninegative ion

Tendency of an electron to undergo hydration

Solution

Question 8

X (g) → X2+ (g)

X + (g) → X2+ (g)

X + (aq) → X2+ (g)

X (g) → X - (g)

Solution

Question 9

increase in nuclear charge

decrease in atomic size

increase in nuclear charge and decrease in shielding effect

increase in atomic size and increase in sheilding effect

Solution

Question 10

1s2 2s2 2p6 3s2 3p6 4s2

1s2 2s2 2p6 3s2 3p6 3d4 4s2

1s2 2s2 2p6 3s2 3p6 3d4

1s2 2s2 2p6 3s2 3p6 3d5 4s1

Solution

Question 11

11Na

19 K

12 Mg

37Rb

Solution

Question 12

N, O

Be, B

Li+, Be+

S, P

Solution

₂₄Cu- coinage

₃₆Ba- alkaline earth

₃₀Zn- alkaline metal

₃₀Xe- Noble gas

K⁺

Ca⁺⁺

Cl^-

SO₄ ^--

Al (g) → Al⁺ (g) + e^-

Al²⁺ (g) → Al³⁺ (g) + e^-

Al⁺ (g) → Al²⁺ (g) + e^-

1s², 2s², 2p⁶, 3s²

1s², 2s², 2p⁶, 3s¹

1s², 2s², 2p⁶

1s², 2s², 2p⁵

X (g) → X²⁺ (g)

X ⁺(g) → X²⁺ (g)

X ⁺(aq) → X²⁺ (g)

X (g) → X ^- (g)

1s² 2s² 2p⁶ 3s² 3p⁶ 4s²

1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁴ 4s²

1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁴

1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵ 4s¹

₁₁Na

₁₉ K

₁₂ Mg

₃₇Rb

Li⁺, Be⁺