Classification of elements & Periodicity in properties Test

Result

Classification of elements & Periodicity in properties Test - 3

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Ionization potentials of the following elements are in the order

A
Al > Ga > Tl> In

B
Al≈Ga>Tl>ln

C
Al > Ga > In > Tl

D
Al≈Ga>In>Tl

Solution

Leaving few exceptions, ionization potential decreases down the group.

The correct answer is: Al≈Ga>Tl>ln
Question 2
1 / -0

Statement-1: Lattice energy in TiO₂ will be much larger than in NaCl.

Statement-2: The higher value of lattice energy for TiO₂ as compared to that of NaCl is due to increased ionic charge.

A
Both Statement-1 and Statement-2 are true and Statement-2 is the correct explanation of Statement-1.

B
Both Statement-1 and Statement-2 are true and Statement-2 is not the correct explanation of Statement-1.

C
Statement-1 is true but Statement-2 is false.

D
Statement-1 is false but Statement-2 is true.

Solution

Both assertion and reason are true and reason is the correct explanation of assertion.

The correct answer is: Both Statement-1 and Statement-2 are true and Statement-2 is the correct explanation of Statement-1.
Question 3
1 / -0

The first ionization energies of Mg, Al, Si, P and S are in the order:

A
Al<Mg<Si<S<P

B
Mg<Al<Si<P<S

C
Mg<Al<P<Si<S

D
Al<Mg<Si<P<S

Solution

Removal of 3s²electron of Mg is more difficult than 3p³electron of Al. Also, removal of 3p³ electron of P requires greater energy than 2p⁴electron of S.

The correct answer is: Al<Mg<Si<S<P
Question 4
1 / -0

Amongst the following, the incorrect statement is

A
The first ionization potential of Al is less than that of Mg

B
The first ionization potential of Na is less than that of Mg

C
The third ionization potential of Mg is greater than that of Al.

D
The second ionization potential of Mg is greater than that of Na

Solution

The second ionization of Na requires much larger energy to break the stable configuration 2s² 2p⁶ than the energy required to remove 3s¹ electron of Mg⁺.

The correct answer is: The second ionization potential of Mg is greater than that of Na
Question 5
1 / -0

Statement-1: Li resembles Mg.

Statement-2: Li⁺ has same size as Mg²⁺.

A
Both Statement-1 and Statement-2 are true and Statement-2 is the correct explanation of Statement-1.

B
Both Statement-1 and Statement-2 are true and Statement-2 is not the correct explanation of Statement-1.

C
Statement-1 is true but Statement-2 is false.

D
Statement-1 is false but Statement-2 is true.

Solution

Li shows diagonal relationship with Mg. Reason is the correct explanation of Assertion.

The correct answer is: Both Statement-1 and Statement-2 are true and Statement-2 is the correct explanation of Statement-1.
Question 6
1 / -0

Identify the least stable amongst the following

A
Be^–

B
C^–\

C
B^–

D
Lr

Solution

Adding an electron to a full subshell (2s² configuration of Be) is not favorable energetically.

The correct answer is: Be^–
Question 7
1 / -0

The species that has the lowest ionization energy amongst the following is

A
Mg

B
Al

C
Al²⁺

D
Al³⁺

Solution

Removal of 3p¹ electron from Al requires lesser energy than that of 3s² electron of Mg (full subshell and having greater penetration towards nucleus).

The correct answer is: Al
Question 8
1 / -0

The element, with one of the following electronic configuration has the highest electron affinity (most positive value)

A
1s²2s²2p⁵

B
[Ar]3d⁵4s²

C
[Ne]3s²3p⁴

D
1s² 2s²

Solution

The configuration 3d⁵4s² is highly stable as d-subshell is half-filled and s-subshell is fully filled. It has no tendency to gain electron.

The correct answer is: [Ar]3d⁵4s²

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Classification of elements & Periodicity in properties Test - 3

Result

Classification of elements & Periodicity in properties Test - 3

Score

-

Rank

-

SHARING IS CARING

Question 1

Al > Ga > Tl> In

Al≈Ga>Tl>ln

Al > Ga > In > Tl

Al≈Ga>In>Tl

Solution

Question 2

Both Statement-1 and Statement-2 are true and Statement-2 is the correct explanation of Statement-1.

Both Statement-1 and Statement-2 are true and Statement-2 is not the correct explanation of Statement-1.

Statement-1 is true but Statement-2 is false.

Statement-1 is false but Statement-2 is true.

Solution

Question 3

Al<Mg<Si<S<P

Mg<Al<Si<P<S

Mg<Al<P<Si<S

Al<Mg<Si<P<S

Solution

Question 4

The first ionization potential of Al is less than that of Mg

The first ionization potential of Na is less than that of Mg

The third ionization potential of Mg is greater than that of Al.

The second ionization potential of Mg is greater than that of Na

Solution

Question 5

Both Statement-1 and Statement-2 are true and Statement-2 is the correct explanation of Statement-1.

Both Statement-1 and Statement-2 are true and Statement-2 is not the correct explanation of Statement-1.

Statement-1 is true but Statement-2 is false.

Statement-1 is false but Statement-2 is true.

Solution

Question 6

Be–

C–\

B–

Lr

Solution

Question 7

Mg

Al

Al2+

Al3+

Solution

Question 8

1s22s22p5

[Ar]3d54s2

[Ne]3s23p4

1s2 2s2

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.

Be^–

C^–\

B^–

Al²⁺

Al³⁺

1s²2s²2p⁵

[Ar]3d⁵4s²

[Ne]3s²3p⁴

1s² 2s²