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NEETChemistrySome Basic Concepts of Chemistry

( array lccc|l & Column I & & & Column II & [Atomic masses (M)] & & & (% composition of heavier isotrope) & Isotope-II & Isotope-II & Average & (A) & (z-1) & (z+3) & z & (P) 25 % by moles (B) & (z+1) & (z+3) & (z+2) & (Q) 50 % by moles (C) & z & 3 z & 2 z & (R) % by mass dependent on z (D) & (z-1) & (z+1) & z & (S) 75 % by mass array )

Options

  1. A((A) (P, S),(B) (R, Q),(C) (Q),(D) (P) )
  2. B(( A ) ( P ),( B ) ( R ),( C ) ( S ),( D ) ( Q ) )
  3. C(A) ( ( R , S ),( B ) ( S ),( C ) ( P ),( D ) ( Q , P ) )
  4. D(( A ) ( P , R ),( B ) ( Q , R ),( C ) ( S , Q ),( D ) ( Q , R ) )

Correct answer

D. (( A ) ( P , R ),( B ) ( Q , R ),( C ) ( S , Q ),( D ) ( Q , R ) )

Step-by-step solution

( aligned & Use % by moles = M_ avg -M₁ M₂-M₁ 100 & % by mass = % by moles M₂ M_ avg aligned )

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