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Transition metals are less reactive than alkali metals because they have:

1. high ionisation potential and low melting point
2. high ionisation potential and high melting point
3. low ionisation potential and low melting point
4. low ionisation potential and high melting point

Correct answer: high ionisation potential and high melting point

Solution

Transition metals are less reactive because their electrons are not removed as easily, so they have higher ionisation potential. They also generally have stronger metallic bonding, giving them higher melting points.

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