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22 votes
22 votes
Which of the following elements would you expect to be most reactive, based

on the number of valence electrons it has?

O A. Potassium (K)
OB. Titanium (Ti)
O C. Iron (Fe)
O D. Calcium (Ca)

User Colin Brock
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1 Answer

25 votes
25 votes

A. Potassium

this is because it only has one valence electron, which can be very easily removed, hence it's reactivity.

User Verbeia
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