NEETChemistrySome Basic Concepts of Chemistry
Match List I with List II for various quantities of nitrogen. List I List II (A) 28 g of N ₂ (I) 2 N_A atoms (B) 11.2 L of N ₂ at STP (II) N_A atoms (C) 14 u of nitrogen (III) 1 atom (D) 1 mole of nitrogen atoms (IV) N_A 2 molecules Choose the correct matching from the options given below:
Options
- A(A)-(II), (B)-(I), (C)-(III), (D)-(IV)
- B(A)-(I), (B)-(IV), (C)-(III), (D)-(II)
- C(A)-(I), (B)-(IV), (C)-(II), (D)-(III)
- D(A)-(II), (B)-(IV), (C)-(III), (D)-(I)
Correct answer
B. (A)-(I), (B)-(IV), (C)-(III), (D)-(II)
Step-by-step solution
Evaluating each quantity in List I: (A) 28 g of N ₂ = 28 28 mol = 1 mol of N ₂ molecules. Since N ₂ is diatomic, it contains 2 N_A atoms. Matches (I). (B) 11.2 L of N ₂ at STP = 11.2 22.4 mol = 0.5 mol of N ₂ molecules = N_A 2 molecules. Matches (IV). (C) 14 u of nitrogen corresponds to the atomic mass of exactly 1 atom of nitrogen. Matches (III). (D) 1 mole of nitrogen atoms contains exactly N_A atoms. Matches (II). The correct matching is (A)-(I), (B)-(IV), (C)-(III), (D)-(II). Answer: (A)-(I), (B)-(IV), (C)-(III