Chemical Properties Flashcards

1
Q

Why TM has variation OS

A

close similarity in energies bt 4s and 3d subshell;

small increase in successive IE;

e can be lost from both 4s and 3d subshell;

forming stable ions or cmpd

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2
Q

Max OS =

A

Loss of both 4s e and unpaired 3d e

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3
Q

Why can form complex?

A

Central TM ion is relatively small and highly charged;

High charge density;

Great polarising power and ample empty energetically favourable orbitals

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4
Q

Why TM exhibits catalytic activity?

A

Provide alternative rn pathway w low Ea;

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5
Q

Why TM acts as homogeneous catalyst?

A

Variation OS;

Gain or loss e readily;

Speed up rn through e transfer

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6
Q

Why TM acts as heterogeneous catalyst?

A

Partially filled or empty d-orbitals;

Forming temporary bonds w reactant molecules;

Providing a surface for rn to occur

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