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p-Block Elements (Group 15–18) · Question 16

JEE Main 2025 (Online) 28th January Evening ShiftNumericalMedium📈 Topic in 29% papers+4
1

A group 15 element forms d - d bond with transition metals. It also forms a hydride, which is the strongest base among the hydrides of other group members that form d - d bond. The atomic number of the element is .

Answer

15

Solution

As per NCERT, phosphorus and arsenic can form d - d bonds with transition metals when their compounds like P(C2H5)3 and As(C6H5)3 act as ligands. Nitrogen cannot (no d orbitals in its valence shell).

Basic strength of group 15 hydrides decreases down the group:

NH3 > PH3 > AsH3 > SbH3 BiH3

Among the elements forming d - d bonds (P, As), the hydride PH3 is the strongest base.

The element is phosphorus, atomic number 15.

Answer: 15

JEE Main 2025 (Online) 28th January Evening Shift

Keep practising — p-Block Elements (Group 15–18)

2

Find the correct statements related to group 15 hydrides. Choose the correct answer from the options given below :

  1. A and B only
  2. B and C only
  3. A, B, C and D
  4. A, C and D Only
JEE Main 2026 (Online) 8th April Evening Shift
3

Correct statements from the following are: Choose the correct answer from the options given below:

  1. B, C and D Only
  2. C, D and E Only
  3. A, C and E Only
  4. A and E Only
JEE Main 2026 (Online) 5th April Morning Shift
4

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below

  1. Both Statement I and Statement II are true
  2. Both Statement I and Statement II are false
  3. Statement I is true but Statement II is false
  4. Statement I is false but Statement II is true
JEE Main 2026 (Online) 4th April Morning Shift
5

Regarding the hydrides of group 15 elements EH3 (E = N, P, As, Sb), select the correct statement from the following : Choose the correct answer from the options given below :

  1. A, B & C only
  2. A, B, C & D
  3. A & D only
  4. B & C only
JEE Main 2026 (Online) 28th January Morning Shift
6

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below :

  1. Statement I is false but Statement II is true
  2. Both Statement I and Statement II are false
  3. Statement I is true but Statement II is false
  4. Both Statement I and Statement II are true
JEE Main 2026 (Online) 28th January Evening Shift
7

One mole of Cl2(g) was passed into 2 L of cold 2 M KOH solution. After the reaction, the concentrations of Cl-, ClO- and OH- are respectively (assume volume remains constant)

  1. 0.5 M, 0.5 M, 0.5 M
  2. 1 M, 1 M, 1 M
  3. 0.5 M, 0.5 M, 1 M
  4. 0.75 M, 0.75 M, 1 M
JEE Main 2026 (Online) 24th January Evening Shift
8

Elements X and Y belong to Group 15. The difference between the electronegativity values of 'X' and phosphorus is higher than that of the difference between phosphorus and 'Y'. 'X' & 'Y' are respectively

  1. As & Bi
  2. Bi & N
  3. N & As
  4. As & Sb
JEE Main 2026 (Online) 23rd January Evening Shift
9

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below

  1. Statement I is true but Statement II is false
  2. Statement I is false but Statement II is true
  3. Both Statement I and Statement II are true
  4. Both Statement I and Statement II are false
JEE Main 2026 (Online) 22nd January Morning Shift
10

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below :

  1. Statement I is false but Statement II is true
  2. Statement I is true but Statement II is false
  3. Both Statement I and Statement II are false
  4. Both Statement I and Statement II are true
JEE Main 2026 (Online) 22nd January Evening Shift
11

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below :

  1. Both Statement I and Statement II are true
  2. Both Statement I and Statement II are false
  3. Statement I is false but Statement II is true
  4. Statement I is true but Statement II is false
JEE Main 2026 (Online) 21st January Evening Shift

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