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In general, the transition elements exhibit their highest oxidation states in their compounds with elements like:
C
S
S and P
F and O
Silver, mercury and lead have been placed in same group of qualitative analysis, because they form:
Carbonates soluble in dilute
Nitrates
Insoluble chlorides
Same type of coloured compounds
Acidic nature of is shown from the formation of the following compound with the formula:
None of these
Larger number of oxidation states are exhibited by the actinoides than those by the lanthanoides, the main reason being
4- orbitals more diffused than the 5-orbitals
Lesser energy difference between 5 and 6 than between 4 and 5-orbitals
More energy difference between 5 and 6 than between 4 and 5-orbitals.
More reactive nature of the actinoides than the lanthanoides
Formation of coloured ions by transition metals signifies
Absorption of light from UV range
Emission of light
Presence of unpaired electrons in s and orbitals
Complimentary colours to the absorbed light
Cuprous chloride is obtained from cupric chloride:
By heating cupric chloride with chlorine
By the electrolysis of cupric chloride containing HCl
By heating cupric chloride with conc. HCl and copper turnings
By passing over
The compound insoluable in water is
Mercurous nitrate
Mercurous chloride
Mercuric nitrate
Mercurous perchlorate