SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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7
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9
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8
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10
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Detailed explanation-1: -Solution. There are 11 covalent bonds-ten C-H and 1 C-C bonds-present in a molecule of butane.
Detailed explanation-2: -The number of bonds an element forms in a covalent compound is determined by the number of electrons it needs to reach octet. Hydrogen is an exception to the octet rule. H forms only one bond because it needs only two electrons.
Detailed explanation-3: -Thus, the four covalent bonds of methane consist of shared electron pairs with four hydrogen atoms in a tetrahedral configuration, as predicted by VSEPR theory.
Detailed explanation-4: -Ethane has seven covalent bonds, i.e., six C-H bonds and one C-C bond.
Detailed explanation-5: -(ii) Ethyne (C2H2) molecules have one triple covalent bond and two single covalent bonds.