Question

Atomic numbers of atoms of elements _____ as you read _____ along each row of the periodic table of the elements.

A. increase; left to right
B. increase; right to left
C. increase; bottom to top
D. decrease; top to bottom

Answer 1

the periodic table increases as you read left to right so it is A. 

Answer 2

The answer is: A. increase; from left to right.

Explanation:

The PERIODIC TABLE that we know today is made up of columns and rows. Where the rows are known as PERIODS and the columns as GROUPS. The elements are ordered by the atomic number, it increases from left to right and from top to bottom.

The answer is: A. increase; from left to right.