Question

Which of the following statements is/are incorrect for isotopes of an element:-

• A. Isotopes have different chemical properties
  
• B. Isotopes have same number of neutrons
• C. Isotopes have different number of protons
• D. Isotopes have same number of electrons

Answer 1

Answer: (A), (B), (C)

The correct options are
A

Isotopes have different chemical properties

B

Isotopes have same number of neutrons

C

Isotopes have different number of protons

Isotopes are the atoms of the same element having the same atomic number (number of protons) but different mass number (Number of protons + Number of neutrons).

Because they have the same atomic number (number of protons) and the number of protons is equal to the number of electrons so they have similar chemical properties. They have different number of neutrons that's why they have different mass number.