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Question
The molecular formula of the compound formed from \[\ce{B}\] and \[\ce{C}\] will be ______.
Options
\[\ce{BC}\]
\[\ce{B2C}\]
\[\ce{BC2}\]
\[\ce{BC3}\]
Solution
The molecular formula of the compound formed from \[\ce{B}\] and \[\ce{C}\] will be \[\ce{BC3}\].
Explanation:
The electronic configuration of B given as 1s2, 2s2, 2p6, 3s2, 3p3 which represents phosphorous atom. The electronic configuration of \[\ce{C}\] is given as 1s2, 2s2, 2p6, 3s2, 3p5 which represents chlorine molecule. So, the molecular formula representing B and C will be phosphorous trichloride trichloride \[\ce{(PCl3)}\] which corresponds to \[\ce{BC3}\].
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