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Moseley's Law

The modern pe...

Question

The modern periodic table is ordered on the basis of:

A

atomic mass

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B

atomic radius

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C

atomic charge

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D

atomic number

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Solution

The correct option is C atomic number
In the modern periodic table, the elements are listed in order of increasing atomic number Z (the number of protons in the nucleus of an atom).

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Q. On the basis of atomic _______, the modern periodic table is arranged.

Q. 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.

Q. Which of the following statement(s) about the Modern periodic table is/are incorrect?
(i) The elements in the Modern periodic table are arranged on the basis of their decreasing atomic number.
(ii) The elements in the Modern periodic table are arranged on the basis of their increasing atomic number
(iii) Isotopes are placed in an adjoining group(s) in the periodic table.

Q. Atomic ______ was adopted as the basis of modern periodic table.

In the modern periodic table, the elements are arranged on the basis of their increasing atomic number.

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