Question

what are the horizontal rows on the periodic table called?
levels
periods
families
blocks
question 8 (1 point)
listen
all atoms of the same element have the same number of protons.
true
false

Explanation:

In the periodic table, horizontal rows are known as periods. Each period number corresponds to the principal energy level that the out - most electrons of the elements in that period occupy. Also, the number of protons defines the identity of an element, so all atoms of the same element have the same number of protons.

Answer:

What are the horizontal rows on the periodic table called?
B. Periods
Question 8 (1 point)
True