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Which of the Following Statement is Correct in Regard to the Classification of Elements? (A) Elements in Modern Periodic Table Are Arranged on the Basis of Increasing Atomic Masses. (B) Elements in Mendeleev'S Periodic Table Are Arranged on the Basis of Increasing Atomic Numbers. (C) in Modern Periodic Table, the Element Nickel of Lower Atomic Mass is Kept before the Element Cobalt of Higher Atomic Mass. (D) in Modern Periodic Table, the Isotopes of Chlorine Having Different Atomic Masses Are Kept in the Same Group. - CBSE Class 10 - Science

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Question

Which of the following statement is correct in regard to the classification of elements?

(a) Elements in modern periodic table are arranged on the basis of increasing atomic masses.
(b) Elements in Mendeleev's periodic table are arranged on the basis of increasing atomic numbers.
(c) In modern periodic table, the element nickel of lower atomic mass is kept before the element cobalt of higher atomic mass.
(d) In modern periodic table, the isotopes of chlorine having different atomic masses are kept in the same group.

Solution

(d) In the modern periodic table, the isotopes of chlorine, having different atomic masses are kept in the same group.
The isotopes of chlorine, having different atomic masses but same atomic numbers are kept in the same group in the modern periodic table.

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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: 37 | Page no. 284

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Solution Which of the Following Statement is Correct in Regard to the Classification of Elements? (A) Elements in Modern Periodic Table Are Arranged on the Basis of Increasing Atomic Masses. (B) Elements in Mendeleev'S Periodic Table Are Arranged on the Basis of Increasing Atomic Numbers. (C) in Modern Periodic Table, the Element Nickel of Lower Atomic Mass is Kept before the Element Cobalt of Higher Atomic Mass. (D) in Modern Periodic Table, the Isotopes of Chlorine Having Different Atomic Masses Are Kept in the Same Group. Concept: The Modern Periodic Table.
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