On the periodic table, calcium and bromine are located in period 4. What is one difference between the two elements?

A. Calcium atoms are more reactive than bromine atoms.

B. Bromine and calcium atoms will each combine with the same elements to form compounds.

C. Calcium atoms combine more easily with other atoms in Group 2.

D. Bromine atoms have more electrons in their outer shell than calcium atoms.

Question

Chemistry

Maritza

Today, 00:59

On the periodic table, calcium and bromine are located in period 4. What is one difference between the two elements?

A. Calcium atoms are more reactive than bromine atoms.

B. Bromine and calcium atoms will each combine with the same elements to form compounds.

C. Calcium atoms combine more easily with other atoms in Group 2.

D. Bromine atoms have more electrons in their outer shell than calcium atoms.

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Answers (1)

Know the Answer?

Jeffery Joyce · Answer 1

D

Explanation:

Just look at the groups and their tendencies. Or look at their electron configurations. You will notice that calcium has 2 valence electrons and bromine has 7 valence electrons.

Halogens have the most valence electrons possible without completing a shell (8 would be needed for that)