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A level Chemistry > Transition Metals > Flashcards

Transition Metals Flashcards

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1
Q

What are transition metals

A

D block elements forming one or more stable ions partially filled d sub shells

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2
Q

What are the properties of transition metals

A

Strong metallic bonds = high melting and boiling points

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3
Q

What does the colour of transition metals depend on

A

Element
Oxidation state
Ligand
Coordination number

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4
Q

What colour is a chromium 3+ ion

A

Green

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5
Q

What colour is a chromium 6+ion

A

Orange

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6
Q

What colour is a manganese 2+ ion

A

Pink

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7
Q

What colour is a manganese 7+ ion

A

Purple

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8
Q

What colour is a fe 2+ ion

A

Green

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9
Q

What colour is an fe 3+ion

A

Orange

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10
Q

What colour is a copper 2+ion

A

Blue

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11
Q

How does a complex ion form

A

When ligands form coordinate bonds to central metal ion

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12
Q

What is a unidentate ligand and what is an example of one

A

Central metal ion with one coordinate bond
E.g water or NH3

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13
Q

What is a multidentate ligand and give an example

A

A species with two coordinate bonds eg ethanedioate

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14
Q

What is a multidentate ligand and give an example

A

Central metal ion with several coordinate bonds e.g haem, EDTA

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15
Q

What is a ligand

A

Ion atom or molecule with at least one lone pair

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16
Q

Why are transition metals good catalysts

A

Lose and gain electrons in the d sub shell
Have surfaces that allows substances to adsorb and Lowe activation energy

17
Q

What is an example of a transition metal being used as a catalyst

A

Fe as a catalyst in the haber process

18
Q

What is the bond angle of a transition metal with six coordinate bonds

A

90

19
Q

What is the bond angle of a transition metal with coordination number of 4

A

109.5

20
Q

How does cisplatin stop cancer spreading ?

A

It loses chlorine ligands through displacement and coordinately bonds to nitrogen atoms in dna to stop it replicating

21
Q

What is an example of a transition metal being used as a catalyst

A

2So2 +O2= 2SO3
Contact process
Catalyst V2O5
At 450 degrees and 1-2 atmospheres of pressure

A level Chemistry (8 decks)

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