Chemistry
Grade-9
Easy
Question
What determines the reactivity of an element?
- Size of its nucleus
- Number of total electrons
- Number of valence electrons
- Number of shells
Hint:
Valence electrons take part in any reaction.
The correct answer is: Number of valence electrons
- Number of shells determine the number of electrons that can be present.
- Total number of electrons gives an idea about the atom.
- Valence electrons take part in any reaction. Hence, valence electrons determines the reactivity of an element.
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