Which of the following will be coloured ion :
Which of the following will be coloured ion :
- A
$Fe^{2+}$
- B
$Cu^+$
- C
$Sc^{3+}$
- D
$Mn^{2+}$
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Highest $(+7) $ oxidation state is shown by
Highest $(+7) $ oxidation state is shown by
- [AIIMS 1999]
Which of the following compounds show colour due to $d-d$ transition?
Which of the following compounds show colour due to $d-d$ transition?
- [JEE MAIN 2024]
Metal used for making joints in jewellery is
Metal used for making joints in jewellery is
When ammonia is added to a cupric salt solution, the deep blue colour is observed it is due to the formation of
When ammonia is added to a cupric salt solution, the deep blue colour is observed it is due to the formation of
$(a)$ Answer the following questions :
$(i)$ Which element of the first transition series has highest second ionisation enthalpy ?
$(ii)$ Which element of the first transition series has highest third ionisation enthalpy ?
$(iii)$ Which element of the first transition series has lowest enthalpy of atomisation ?
$(b)$ Identify the metal and justify your answer.
$(i)$ Carbonyl $M(CO)_5$ $(ii)$ $MO_3F$
$(a)$ Answer the following questions :
$(i)$ Which element of the first transition series has highest second ionisation enthalpy ?
$(ii)$ Which element of the first transition series has highest third ionisation enthalpy ?
$(iii)$ Which element of the first transition series has lowest enthalpy of atomisation ?
$(b)$ Identify the metal and justify your answer.
$(i)$ Carbonyl $M(CO)_5$ $(ii)$ $MO_3F$