Q268
Which of the following statements regarding the modern periodic table is correct?
A.
It consists of 18 vertical columns, which are called groups
AnswerB.
It consists of 7 horizontal rows, which are called groups
C.
It consists of 18 horizontal rows, which are called period
D.
It consists of 7 vertical column, called period
Answer: Option A
Solution
Answer: Option A
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