Which of the following statement 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 known as groups.
(d) It has 7 horizontal rows known as groups.

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Solution

(c) It has 18 vertical columns known as groups.
In the modern periodic table, there are 18 vertical columns known as groups.

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Similar questions

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Which of the following statement 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 known as groups. (d) It has 7 horizontal rows known as groups.

(c) It has 18 vertical columns known as groups.In the modern periodic table, there are 18 vertical columns known as groups.

Which of the following statement 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 known as groups.
(d) It has 7 horizontal rows known as groups.

(c) It has 18 vertical columns known as groups.
In the modern periodic table, there are 18 vertical columns known as groups.