Chemistry

Chemistry

Problem

Incorrect statement regarding BF2NH2BF_2NH_2 molecule is : a. FBFFBF bond angle <120∘< 120^\circ b. HNHHNH bond angle >109∘28′> 109^\circ 28' c. Exhibits intermolecular H-bond d. Hybridization of N-atom is sp3sp^3
Intuitive explanation

This molecule is a classic example of coordinate covalent bonding and Lewis acid-base chemistry. The key insight is that BF2NH2BF_2NH_2 forms when boron (electron-deficient) accepts a lone pair from nitrogen's sp3sp^3 hybrid orbital, creating a dative bond—so you need to track which atom has what formal charge and geometry after this donation occurs. Understanding the actual structure (not just the formula) reveals which common claims about bonding, charges, or hybridization are false.

Intuitive explanation

This molecule is a classic example of coordinate covalent bonding and Lewis acid-base chemistry. The key insight is that BF2NH2BF_2NH_2 forms when boron (electron-deficient) accepts a lone pair from nitrogen's sp3sp^3 hybrid orbital, creating a dative bond—so you need to track which atom has what formal charge and geometry after this donation occurs. Understanding the actual structure (not just the formula) reveals which common claims about bonding, charges, or hybridization are false.

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