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p -Block elements - ll — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistryp -Block elements - ll1 Mark
MCQ
A non-metal $M$ forms $MCl_3 , M_2O_5$ and $Mg_3M_2$ but does not form $MI_5.$ Then incorrect statement regarding non-metal $M$ is
  • A
    $M$ can form multiple bond
  • B
    $M$ is of second period element
  • ✓
    Atomicity of non-metal is $4$
  • D
    The range of oxidation number for $M$ is $+5$ to $-3$
✓

Answer

Correct option: C.
Atomicity of non-metal is $4$
c
$M$ exhibits two oxidation states $+3$ and $+5$ but covalency can not be $5$ hence $M$ can not expan its valence shell. Therefore , $M$ will be nitrogen having atomicity two.

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