L Passage type questions :
Although the nitrogen atom has completed its octet in ammonia, it still has a lone pair of electrons in the
valence shell which it can donate. The boron atom in boron trifluoride is short of two electrons which it
accepts and completes its octet.
HŽNO + BF [H NBF3]
Donor acceptor ammonia-boron trifluoride
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I the given passage both two electrons of dative bond are donated by
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