CIE iGCSE Co-Ordinated Science C2.3 Isotopes Exam Style Questions Paper 1
Question
How many neutrons are in one atom of the isotope $_{17}^{35}\textrm{Cl}$ ?
(A) 17
(B) 18
(C) 35
(D 52
▶️Answer/Explanation
Ans: B
Question
The diagrams represent pairs of nuclei of some atoms.
Which pair shows nuclei of different isotopes of the same element?
▶️Answer/Explanation
Ans : B
Question
X and Y are isotopes of the same element.
Which statement about X and Y is correct?
(A) They have the same nucleon number but different numbers of protons.
(B) They have the same number of neutrons but different numbers of electrons.
(C) They have the same atomic number but different numbers of electrons.
(D) They have the same number of protons but different numbers of neutrons.
▶️Answer/Explanation
Ans: D
Question
Which statement about isotopes of the same element is correct?
(A) They have the same number of protons but different number of electrons.
(B) They have the same number of protons but different number of neutrons.
(C) They have the same number of neutrons but different number of electrons.
(D) They have the same number of neutrons but different number of protons.
▶️Answer/Explanation
Ans: B