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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
Which is incorrect?
  • A
    In Mendeleev's periodic table third period elements are bridge elements
  • B
    In long form of periodic table total group $= 18$
  • ✓
    In modern periodic table $III$ $B$ is $13^{th}$ group
  • D
    All are incorrect
✓

Answer

Correct option: C.
In modern periodic table $III$ $B$ is $13^{th}$ group
c
$III$ $B$ is $3^{rd}$ $gp$.,

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