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3. Classification of elements and periodicity in properties — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry3. Classification of elements and periodicity in properties1 Mark
MCQ
Find correct one
  • ✓
    $A$ belong to $15$ group
  • B
    $F,B$ belong to $14$ group
  • C
    $B,F$ belong to same period
  • D
    All are incorrect
✓

Answer

Correct option: A.
$A$ belong to $15$ group
a
$At. no.$
$F = 118$
$E = 85$
$D = 52$
$A = 51$

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