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p-Block Elements (Group 15–18)

JEE Main 2024 (Online) 29th January Evening ShiftMCQEasy📈 Topic in 19% papers+4−1
Ques. 1JEE Main 2024, 29 January (Evening Shift)

Anomalous behavior of oxygen is due to its

  1. large size and low electronegativity
  2. small size and high electronegativity
  3. small size and low electronegativity
  4. large size and high electronegativity

Answer

(2) small size and high electronegativity

Solution

O is the first member of group 16: smallest atom, electronegativity 3.5 (next only to F), no d orbitals.

∵ small size + high electronegativity ⇒ H-bonding (H2O liquid, H2S gas), pπ–pπ bonding (O2 vs S8), covalency limited to 4

Answer: (2)

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

Ques. 2JEE Main 2024, 27 January (Morning Shift)

Element not showing variable oxidation state is :

  1. Bromine
  2. Iodine
  3. Chlorine
  4. Fluorine
Ques. 3JEE Main 2024, 27 January (Evening Shift)

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

  1. Statement I is correct but Statement II is incorrect
  2. Both Statement I and Statement II are incorrect
  3. Statement I is incorrect but Statement II is correct
  4. Both Statement I and Statement II are correct
Ques. 4JEE Main 2024, 27 January (Evening Shift)

1 mole of PbS is oxidised by "X" moles of O3 to get "Y" moles of O2. X + Y = .

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