Isotopes of an element have the same number ofA. protons and electrons.B. protons and neutrons.C. neutrons and electrons.D. protons, neutrons and electrons
Question
Isotopes of an element have the same number ofA. protons and electrons.B. protons and neutrons.C. neutrons and electrons.D. protons, neutrons and electrons
Solution
Isotopes of an element have the same number of protons and electrons. So, the correct answer is A. protons and electrons.
Here's why:
Isotopes are variants of a particular chemical element which differ in neutron number, and consequently in nucleon number. All isotopes of a given element have the same number of protons but different numbers of neutrons in each atom.
The number of protons determines the element, and is known as the atomic number. For example, all carbon atoms have 6 protons. Electrons are involved in chemical reactions and bond formation, and in a neutral atom, the number of electrons equals the number of protons. Therefore, isotopes of an element have the same number of protons and electrons.
However, isotopes have different numbers of neutrons. This is what makes them isotopes. So, they do not have the same number of protons and neutrons (option B), or neutrons and electrons (option C).
Option D is also incorrect because, as explained, while isotopes of an element have the same number of protons and electrons, they have different numbers of neutrons.
Similar Questions
Which statement is correct about the isotopes of an element?A. They have the same mass numberB. They have the same electron arrangementC. They have more protons than neutronsD. They have the same numbers of protons and neutrons
Isotopes of the same element are different from one another in thatMultiple Choicethey have a different number of protons.they have a different number of neutrons.they have a different number of electrons.they are a different element.only one of the isotopes is matter.
Two atoms are isotopes if they havea) different atomic numbers.b) the same mass number, but different atomic numbers.c) the same number of protons and neutrons.d) the same number of electrons, but a different number of neutrons.e) the same atomic number, but a different mass number.
Which statement about the isotopes of an element is correct?A. They have the same mass number.B. They have a different atomic number.C. They have the same chemical properties.D. They are located in different places in the periodic table
Isotopes of the same element have different?Aatomic numbersBnumbers of neutronsCnumbers of electronsDnumbers of protons
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