Interpretation:
Boron trihydride
Concept introduction:
According to octet rule, to achieve a full set of valence electrons that is eight electrons in outermost shell atoms share, lose, or gain electrons. Noble gases show stable electron arrangement. This stable arrangement contains complete outer energy level and smaller potential energy compared to other electron arrangement.
Answer to Problem 99A
As B produces suboctets that means it contains stable configuration with less than eight electrons. Boron contains six electrons so; it can share a pair of electrons donated by other atoms. Hence,
Explanation of Solution
In
B atom shares only six electrons to form an octet. Hence, B share a pair of electrons given by other atoms. A coordinate covalent bond result when both of the electrons of one atom donates to share with an atom or ion which requires two electrons to produce lower potential energy and stable arrangement of electrons.
By sharing of electrons a covalent bond is produced.
Chapter 8 Solutions
Chemistry: Matter and Change
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