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Explain the change in first ionisation energy across period 2

Ionisation energy increases overall because nuclear charge increases with no significant increase in shielding, so it becomes more difficult to remove the outer electron.Ionisation energy decreases going fro...
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Answered by Amelia I. • Chemistry tutor
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State and explain how the attraction between nuclei and outermost electrons varies across group 3 (2 marks)

Attraction between the nucleus and the outer electrons increases across a group because the proton number increases and the atomic radius decreases due to increased nuclear charge.Across a group shielding re...
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Answered by Amy D. • Chemistry tutor
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Write an equation for the incomplete combustion of dodecane to produce gaseous products only.

C10H22 (l) + 11.5O2 (g) --> 10CO(g) + 11H20 (g)Incomplete combustion so the products are CO and H2O, remember to include state symbols as the question asks for gaseous products.
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Answered by Fawcett G. • Chemistry tutor
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Balance the following equation for the formation of magnesium chloride: Mg + HCl --> MgCl2 + H

Mg + 2 HCl --> MgCl2 + H 2 There are two chlorines in magnesium chloride so you put a two in front of the hydrochloric acid. This means that you need to put a 2 after the hydrogen gas.
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Answered by Helen G. • Chemistry tutor
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What is Ionic bonding?

Ionic bonding is bonding between a metal and a non-metal . This happens due to a transferal of electrons. For example a metal from group 2 such as Magnesium bonding to a non-metal from group 6 such as oxygen...
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Answered by Bobby B. • Chemistry tutor
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