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3 marks so 3 points = chlorine's outer electrons are closer to the nucleus than iodine's (because chlorine has fewer shells)//so chlorine's nucleus is more attracted to its outer electrons than iodine's n...
Iron (III) / Fe3+ Mr = 56Oxygen / O Mr = 16Iron (III) Oxide formula = Fe2O32x Iron (III) = 56 * 2 = 1123x Oxygen = 16 * 3 = 4848 + 112 = 160Fe2O3 relative formula mass = 160
Crude oil heated and fed into the bottom of the fractionating column as a vapour. The column is cooler at the top and hotter at the bottom of the column. The process works using the different boiling and ...
Covalent bonds are formed as a result of the sharing of pairs of electrons between atoms in order to attain a full outer shell. This typically will happen between two non metals. An ionic bond has the sam...
AnswerAnswer outline and marking scheme for question: 2a)Answered by satvir c. • Chemistry tutor1428 Views
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