Question

Consider the elements in this family (group) of the periodic table. Because they are in the same family, what can you predict about these elements?
A) They are all about the same mass.
B) They are chemically reactive in a similar way.
C) The size of the atom decreases as you go down the column.
D) The elements change from metals to nonmetals as go down the column.

Answer 1

C) The size of the atom decreases as you go down the column because the atomic size decreases down the table.

Answer 2

option b is the right answer

b) they are chemically reactive in the similar way

the other reasons are defied becuz :

they are no about the same mass, the mass of the elements differ

the size of the atom increases going down a group and does not decrease

the elements do not change from metal to non metal , the metallic character increases on going down a group ( group = column)

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