Given below are two statements : Statement (I) : Both metals and non-metals exist in p and d-block elements. Statement (II) : Non-metals have higher ionisation enthalpy and higher electronegativity than the metals. In the light of the above statements, choose the most appropriate answer from the options given below :

Statement I is false but Statement II is true

Both Statement I and Statement II are false

Both Statement I and Statement II are true

Statement I is true but Statement II is false

Periodic Table and Periodicity PYQ — JEE Main 2024 · 1 Feb · Shift 2 · Q18 with Solution

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Correct answer: C

Analyze Statement (I):

Statement (I): Both metals and non-metals exist in p and d-block elements.
- In the p-block, both metals and non-metals are indeed present.
  - Non-metals: C, N, O, F, etc.
  - Metals: Al, Ga, In, Tl, Sn, Pb, etc.
- In the d-block, elements are generally transition metals.
  - The d-block consists almost entirely of metals.
  - Non-metals are not present in the d-block.
Therefore, the claim that both metals and non-metals exist in p and d-block elements is false.
Analyze Statement (II):

Statement (II): Non-metals have higher ionisation enthalpy and higher electronegativity than the metals.
- In general, compared to metals, non-metals:
  - have higher ionisation enthalpy
  - have higher electronegativity
- This is a standard periodic trend.
Therefore, Statement (II) is true.
Evaluate the options:
- A: Both false → incorrect
- B: Both true → incorrect
- C: Statement I is false but Statement II is true → correct
- D: Statement I is true but Statement II is false → incorrect
Conclusion:

The correct option is C.

View written solutionFree

Correct answer: C

Analyze Statement (I):

Statement (I): Both metals and non-metals exist in p and d-block elements.
- In the p-block, both metals and non-metals are indeed present.
  - Non-metals: C, N, O, F, etc.
  - Metals: Al, Ga, In, Tl, Sn, Pb, etc.
- In the d-block, elements are generally transition metals.
  - The d-block consists almost entirely of metals.
  - Non-metals are not present in the d-block.
Therefore, the claim that both metals and non-metals exist in p and d-block elements is false.
Analyze Statement (II):

Statement (II): Non-metals have higher ionisation enthalpy and higher electronegativity than the metals.
- In general, compared to metals, non-metals:
  - have higher ionisation enthalpy
  - have higher electronegativity
- This is a standard periodic trend.
Therefore, Statement (II) is true.
Evaluate the options:
- A: Both false → incorrect
- B: Both true → incorrect
- C: Statement I is false but Statement II is true → correct
- D: Statement I is true but Statement II is false → incorrect
Conclusion:

The correct option is C.