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STD 12 - p -Block elements - ll — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - p -Block elements - ll4 Marks
MCQ
Which is wrong statement?
  • A
    The decreasing order of thermal stability is $CsOH > RbOH >KOH > NaOH$
  • B
    The decreasing order of bond angle is $BF_3 > PF_3 > ClF_3$
  • C
    The decreasing order of bond dissociation energy is $Cl_2 > Br_2 > F_2 > I_2$
  • ✓
    The decreasing order of melting point is $NH_3 > (CH_3)_2NH > CH_3NH_2 > (CH_3)_3N$
✓

Answer

Correct option: D.
The decreasing order of melting point is $NH_3 > (CH_3)_2NH > CH_3NH_2 > (CH_3)_3N$
d
The decreasing order of melting point is $NH _3\,>\,\left( CH _3\right)_2 NH\, >\, CH _2 NH _2\,>\,\left( CH _3\right)_3 N$.

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