Chemistry · Oct / Nov 2017 · Paper 11 · Question 27
The total number of electrons in one atom of element Q is 17 and in one atom of element R is 19. Which statement about elements Q and R is correct?
- AQ and R react together to form a covalent compound.
- BQ forms positive ions.
- CR has more outer shell electrons than Q.
- DR is more metallic than Q.
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Correct answer: D. R is more metallic than Q.
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