FOOD CHEMISTRY
BASIC PRINCIPLES OF CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which atom does not need eight electrons in its outer energy level to be stable?
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Carbon
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Chlorine
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Hydrogen
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Sodium
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Explanation:
Detailed explanation-1: -Elements like hydrogen, lithium, helium do not obey the octet rule. They can only lose or gain one electron to become stable due to which they follow the octet rule. Another exception of the octet rule is transition elements. Due to the presence of d-orbitals, they can hold 18 electrons in their outermost shell.
Detailed explanation-2: -These electron configurations make helium and neon very stable. Although argon does not technically have a full outer shell, since the 3n shell can hold up to eighteen electrons, it is stable like neon and helium because it has eight electrons in the 3n shell and thus satisfies the octet rule.
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