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This question is about the ionisation energy of elements across a period. a) Define ionisation energy. b) Explain the trend in ionisation energy across a period.

a) Ionisation energy is the minimum amount of energy required to remove an electron from each atom of one mole of gaseous atoms. b) Across a period, the ionisation energy increases due to the increase in pro...
EC
Answered by Emma C. • Chemistry tutor
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Identify and assess the various controls on government power in the United Kingdom.

Content ought to include a breakdown of political and legal control mechanisms. Political control might fall under two headings, Parliamentary control and public control . The former comprises Select Committ...
ES
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Describe the process of primary succession

Primary succession is the change in an ecosystem from bare ground to a stable, complex ecosystem. Pioneer species are the first to colonise this bare ground, with adaptations to the harsh, low-nutrient condi...
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Answered by Max R. • Biology tutor
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Explain why first ionisation energy decreases down a group.

As you go down the group, ionisation energy decreases because there are more electron shells and shielding increases, therefore the outer electron is further away from the positive nucleus and is less strong...
IA
Answered by Ifsa A. • Chemistry tutor
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To what extent is the power of the British Prime Minister limited by the cabinet?

In recent decades, the changing management of the cabinet by the Prime Minister has led to the restraining power of the institution to be reduced. By holding smaller 'kitchen' cabinets, or getting ministers ...
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