has ______ kind of bonds:
Covalent 2-centred and 2-electron.
Ionic 2-centred and 2-electron.
Covalent and 3-centred and 2-electron.
Ionic and 3-centred and 2-electron.
is an electron deficient compound which forms 3-centred 2-electron covalent bond to satisfy its octet.
Hence option 3 is correct.
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