The two isotopes of chlorine, Cl-35 and Cl-37, have the same allotted slot in the modern periodic table because both have the same

Atomic weight

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Atomic number

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Number of neutrons

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Number of nucleons

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Solution

The correct option is B Atomic number
Modern periodic law states that
‘The physical and chemical properties of elements are the periodic functions of their atomic numbers’. This law was proposed by Henry Moseley.
On the basis of this law, the elements in the modern periodic table are arranged in increasing order of atomic numbers.
Isotopes of chlorine, Cl-35 and Cl-37, have the same atomic number (17) and thus are allocated to the same slot (period and group).
All the isotopes of an element occupy the same position in the modern periodic table.

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Similar questions

Q. Assertion :The placement of isotopes in Mendeleev's periodic table overcome in the modern periodic table. Reason: In modern periodic table, the elements have been allotted places based on their atomic numbers

Q. (a) Why do we classify elements?
(b) What were the two criteria used by Mendeleev to classify the elements in his periodic table?
(c) Why did Mendeleev leave some gaps in his periodic table?
(d) In Mendeleev's periodic table, why was there no mention of noble gases like helium, neon and argon?
(e) Would you place the two isotopes of chlorine, CI-35 and CI-37 in different slots because of their different atomic masses or in the same slot because their chemical properties are the same? Justify your answer.

Naturally occurring chlorine consists of two isotopes whose atomic weights are 35 and 37. The atomic weight of natural chlorine is 35.5, then what is the ratio of $C l^{35} t o C l^{37}$ ?

Q. In chlorine gas, ratio of

C l^{35}

and

C l^{37}

is?

Elements in the same vertical group of the Modern Periodic Table have same:

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