Statement I: Physical properties of isotopes of an element are similar.
Statement II: Isotopes have the same number of nucleons.
Statement III: Chemical properties of C-12 and C-14 will be similar.

Which of the given statements is/are correct?

Only I

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II and III

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I and II

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Only III

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Solution

The correct option is D
Only III

The chemical property of an element depends on the number of valence electrons. Isotopes of an element have the same number of valence electrons and thus similar chemical properties.
On the other hand, physical properties are based on the atomic mass of the element which is different in the case of isotopes. This is because they have different masses due to the difference in the number of neutrons.

Number of nucleons = Number of protons + Number of neutrons
As isotopes have different numbers of neutrons, they have different numbers of nucleons.

C-12 and C-14 are an example of isotopes of carbon, therefore, the chemical properties of both these elements will be similar.

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Similar questions

Question 16
Which of the following are the characteristics of isotopes of an element?

(i) Isotopes of an element have same atomic masses
(ii) Isotopes of an element have same atomic number
(iii) Isotopes of an element show same physical properties
(iv) Isotopes of an element show same chemical properties

(a) (i), (iii) and (iv)
(b) (ii), (iii) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)

Which of the following are the correct characteristics of isotopes of an element?

(i) same atomic mass (ii) same atomic number

(iii) same physical properties (iv) same chemical properties

(a) (i), (ii) and (iv) (b) (ii), (iii) and (iv) (c) (ii) and (iii) (d) (ii) and (iv)

Q. Q. Consider the following statements with reference to Isotopes:Which of the above given statements is/are incorrect?

1 and 2 only
2 only
3 only
1 and 3 only

Q. Isotopes of an element have
(a) the same physical properties (b) different chemical properties
(c) different number of neutrons (d) different atomic numbers.

Statement 1: Isobars have same chemical and physical properties.
Statement 2: Isobars are the atoms with equal number of nucleons.

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Statement I: Physical properties of isotopes of an element are similar. Statement II: Isotopes have the same number of nucleons. Statement III: Chemical properties of C-12 and C-14 will be similar. Which of the given statements is/are correct?

Statement I: Physical properties of isotopes of an element are similar.
Statement II: Isotopes have the same number of nucleons.
Statement III: Chemical properties of C-12 and C-14 will be similar.

Which of the given statements is/are correct?