GENERAL KNOWLEDGE

GK

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What are isotopes?
A
Atoms that have the same number of neutrons but have different numbers of protons.
B
Atoms that have the same number of electrons but have different numbers of protons.
C
Atoms that have the same number of protons but have different numbers of neutrons.
D
Atoms that have the same number of neutrons and protons.
Explanation: 

Detailed explanation-1: -Isotopes have the same atomic number but different mass number. They have same number of electrons and same number of protons but different number of neutrons. For example, two isotopes of chlorine have mass numbers 35 and 37. Both have atomic number 17.

Detailed explanation-2: -Hence, Isotopes have the same atomic number but different mass numbers.

Detailed explanation-3: -Examples of radioactive isotopes include carbon-14, tritium (hydrogen-3), chlorine-36, uranium-235, and uranium-238.

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