Download App

-p-Block elements - I — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry-p-Block elements - I1 Mark
MCQ
Boron cannot form which one of the following anions ?
  • ✓
    $BF_6^{3-}$
  • B
    $BH_4^-$
  • C
    $B(OH)_4^-$
  • D
    $BO_2^-$
✓

Answer

Correct option: A.
$BF_6^{3-}$
a
Boron cannot form $B F_{6}^{3-}$ due to non-availability of $d$ -orbitals.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from -p-Block elements - I→-p-Block elements - I — all question types→Chemistry STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

$F{e_2}{O_3}(s)\, + \,\frac{3}{2}\,C(s)\, \to \,\frac{3}{2}\,CO_2(g)\, + \,2Fe(s)\,:$

$\Delta {H^o}\, = \, +234.1\,\,kJ$

$C(s)\, + {O_2}(g)\, \to \,\,C{O_2}(g)$

Use these equation and $\Delta H^o$ value to calculate $\Delta H^o$ for this reaction:

$4Fe(s) + 3O_2(g) \to 2Fe_2O_3(s)$

.....$kJ$

→
Ethylene reacts with ozone to give
→
The molecule has $sp^3d^2$, hybridisation and square planar shape
→
In the nucleus of $_{20}C{a^{40}}$ there are
→
The wave number of the first emission line in the Balmer series of $H-$ Spectrum is ( $R =$ Rydberg constant)
→
An inorganic compound $(A)$ made of two most occuring elements into the earth crust, having a polymeric tetra-headral network structure. With carbon, compound $(A)$ produces a poisonous gas $(B)$ which is the most stable diatomic molecule. Compounds $(A)$ and $(B)$ will be
→
Which of the following equilibrium is not affected by pressure ?
→
Strongest reducing agent is
→
Which of these dose not reflect the periodicity of the elements
→
Which of the following relations gives the value of $n$ =
→