AP BIOLOGY

BIOCHEMISTRY

BONDING

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following describes an isotope?
A
same number of neutrons, different number of protons
B
same number of neutrons, different number of electrons
C
same number of protons, different number of electrons
D
same number of protons, different number of neutrons
Explanation: 

Detailed explanation-1: -Isotopes are members of a family of an element that all have the same number of protons but different numbers of neutrons. The number of protons in a nucleus determines the element’s atomic number on the Periodic Table.

Detailed explanation-2: -Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons and electrons.

Detailed explanation-3: -What are Isobars? Isobars are atoms (nuclides) of different chemical elements which differs in the chemical property but has the same physical property. So, we can say that isobars are those elements which have a different atomic number but the same mass number.

Detailed explanation-4: -Isotopes are atoms of the same element having same number of protons/electrons but different number of neutrons.

Detailed explanation-5: -(I-soh-tope) A form of a chemical element in which the atoms have the same number of protons (part of the nucleus of an atom) but with a different number of neutrons (part of the nucleus of an atom). For example, carbon 12, carbon 13, and carbon 14 are isotopes of carbon.

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