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chemistry igcse acapprinted 127 · PDF 127
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printed 127 · PDF 127
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127
MCQS
Bonding:
Q1. 0620_s23_qp_22
ANS: The correct answer is C, as in this example Nitrogen’s octet is being completed according to the octet
rule, and Hydrogen has the correct number of electrons in its outermost shell. A is not the correct answer,
because Nitrogen does not have a full octet, and thus is not stable. B is incorrect because the Hydrogen
atoms have three electrons in their outermost shell, alongside Nitrogen being unstable. D is incorrect
because Hydrogen has three electrons in its outermost shell, whereas it should only have two in the case of a
stable ion.
Q2. 0620_s23_qp_22