Which one of the following elements is unable to form $MF_{6}^{3-}$ ion?
Which one of the following elements is unable to form $MF_{6}^{3-}$ ion?
- [NEET 2018]
- A
$Ga$
- B
$Al$
- C
$B$
- D
$In$
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The tendency of $BF_3, BCl_3$ and $BBr_3$ to behave as Lewis acid decreases in the sequence
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- [AIPMT 2010]
The molecular formula of felspar is
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