SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Donating & receiving valence e-between atoms.
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Opposite slight charges attract each other between compounds.
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Scientists are still not sure how they form.
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Sharing valence e-between atoms.
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Detailed explanation-1: -Sharing of an electron pair between the atoms results in the formation of covalent bonds. During bond formation, each bond consists of two electrons which are contributed by each one of the combining atoms. By the mutual sharing of electrons, each atom attains an octet configuration in its valence shell.
Detailed explanation-2: -Covalent bonds involve the sharing of electron pairs between atoms. Electron pairs shared between atoms of equal or very similar electronegativity constitute a nonpolar covalent bond (e.g., H–H or C–H), while electrons shared between atoms of unequal electronegativity constitute a polar covalent bond (e.g., H–O).
Detailed explanation-3: -A covalent bond forms when two non-metal atoms share a pair of electrons . The electrons involved are in the outer shells of the atoms. An atom that shares one or more of its electrons will complete its outer shell. Covalent bonds are strong – a lot of energy is needed to break them.
Detailed explanation-4: -Conditions: Covalent bonds are formed when the electronegativity difference between atoms is very small and the complete transfer of electrons can not take place. Characteristics of covalent bonds: The pair of electrons participating in this type of bonding is called shared pair or bonding pair.