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AQA AS CHEMISTRY PAPER 1 2017 EXAM WITH DETAILED ANSWERS.

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Give the shape of PH3 and state whether it has a permanent dipole. - CorreCt Answers -trigonal pyramidal Yes. The bonds are non-polar but PH3 has a permanent dipole due to the lone pair on P. Give the oxidation state of nitrogen in NO₂⁻. - CorreCt Answers -+3 What is the ratio of peaks in a mass spectrum of chlorine? - CorreCt Answers -70, 72, 74 in ratio 9:6:1Explain how permanent dipole-dipole forces arise between hydrogen chloride molecules. /2 - CorreCt Answers - Difference in electronegativity leads to bond polarity

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AQA AS CHEMISTRY PAPER 1 2017 EXAM
WITH DETAILED ANSWERS.

Give the shape of PH3 and state whether it has a permanent dipole. -
CorreCt Answers -trigonal pyramidal



Yes. The bonds are non-polar but PH3 has a permanent dipole due to the
lone pair on P.


Give the oxidation state of nitrogen in NO₂⁻. - CorreCt Answers -+3


What is the ratio of peaks in a mass spectrum of chlorine? - CorreCt
Answers -70, 72, 74 in ratio 9:6:1Explain how permanent dipole-dipole
forces arise between hydrogen chloride molecules. /2 - CorreCt Answers -
Difference in electronegativity leads to bond polarity


and there is an attraction between ∂+ on one molecule and ∂- on another


Give the meaning of the term electronegativity. /1 - CorreCt Answers -
Power of an atom to attract a pair of electrons in a covalent bond.

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