Unit 1 : Ionisation Flashcards

1
Q

What is the definition of Ionisation

A

The energy required to remove one mole of electrons from one mole of atoms in a gaseous state

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2
Q

What is the trend across a period

A

Ionisation increases across a period because it would take more energy to break effectively increasing attraction

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3
Q

What are the trends down a group

A

Ionisations decreases down a group as effective nuclear charge also decreases down a group

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4
Q

What is the first ionisation of magnesium

A

Mg(g) —> Mg+(g) + e-

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5
Q

What is the second ionisation of magnesium

A

Mg+(g) —> Mg2+(g) + e-

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6
Q

Is the first or second ionisation energy higher

A

Second ionisation energy for any atom will always be higher than the first

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7
Q

Why is the second ionisation higher than the first

A

Because is already has a positive ion

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