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)ResponsesCa7Br2C a sub 7 B r sub 2CaBr2C a B r sub 2CaBrC a B rCa2Br7

Answer 1

The correct chemical formula for calcium bromide, which is formed from calcium (Ca) and bromine (Br), is CaBr2.

Calcium has 2 valence electrons, and bromine has 7 valence electrons. To form a stable compound, calcium will lose its 2 electrons, while each bromine atom will gain 1 electron. Thus, you need two bromine atoms for every calcium atom to balance the charges, resulting in the formula CaBr2.