Which have melting point below $500\,^{\circ} C$.
Which have melting point below $500\,^{\circ} C$.
- [AIIMS 2019]
- A
$Zn ,\, Cd$
- B
$Ag , \,Cu$
- C
$Cd , \,Cu$
- D
$Ag , \,Zn$
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Transition elements show high melting points. Why ?
Transition elements show high melting points. Why ?
Most transition metals
$I :$ form sets of compounds which display different oxidation states of the metal
$II :$ form coloured ions in solution
$III :$ burn vigorously in oxygen
$IV :$ act as catalyst
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$I :$ form sets of compounds which display different oxidation states of the metal
$II :$ form coloured ions in solution
$III :$ burn vigorously in oxygen
$IV :$ act as catalyst