Question

Use your knowledge of the periodic table and the periodic table provided. Which pair of elements are more similar chemically Na and Mg or F and Br? And why?
A) F and Br, because they are in the same group.
B) F and Br, because they are in the same period.
C) Na and Mg, because they are in the same group.
D) Na and Mg, because they are in the same period.

Answer 1

A, because all elements in a same group/family will always have similar properties with each others.

Answer 2

Answer:

A - F and BR, because they are in the same group

Explanation:

Studying chemistry, the periodic table is divided into groups in each vertical column. The fluorine and bromine elements cited in the question belong to the same group and have similar properties because these elements have the same number of electrons at the outermost level of energy (valence layer).