CIE iGCSE Co-Ordinated Science C2.3 Isotopes Exam Style Questions Paper 2
Question
The numbers of protons, neutrons and electrons in four particles are shown.
Which two particles are isotopes of the same element?
(A) W and X
(B) W and Y
(C) X and Y
(D) Y and Z
▶️Answer/Explanation
Ans : B
Question
One isotope of oxygen is represented by \( _{8}^{16}\textrm{O}\) .
Which diagram represents a different isotope of oxygen?
▶️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
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