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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. - CBSE Class 10 - Science

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Question

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.

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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APPEARS IN

 Lakhmir Singh Solution for Chemistry for Class 10 (2019 Exam) (2018 to Current)
Chapter 5: Periodic Classification Of Elements
Q: 38 | Page no. 284

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Solution 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. Concept: The Modern Periodic Table.
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