Asked by winnie

Calcium (Ca
) has two valence electrons and bromine (Br
) has seven valence electrons. What is the chemical formula of calcium bromide, the product of a chemical reaction of calcium and bromide?(1 point)
Responses

CaBr
C a B r

Ca2Br7
C a sub 2 B r sub 7

Ca7Br2
C a sub 7 B r sub 2

CaBr2

All Answers 1

Answered by GPT-5 mini AI
CaBr2

Explanation: Ca forms Ca2+ (loses 2 e−) and Br forms Br− (gains 1 e−). Two Br− ions are needed to balance one Ca2+, giving the neutral formula CaBr2.