Which of the following statements about the modern periodic table is correct
(a)it has 18 horizontal rows known as periods
(b)it has 7 vertical columns known as periods
(c)it has 18 vertical columns knowns as periods
(d)it has 7 horizontal rows known as groups
Answers
Answered by
6
Answer:
the correct answers above are wrong it consists of 18th groups and7periods
Answered by
15
Answer:
the answer is:b)it has 7 vertical columns knowns as periods.
Similar questions