Isotopes - Practice

Front

What is an isotope?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons, resulting in different mass numbers.

Front

How do you calculate the number of neutrons in an isotope?

Back

To find the number of neutrons, subtract the atomic number (number of protons) from the mass number (A). Neutrons = A - Z.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the mass number of an isotope?

Back

The mass number (A) is the total number of protons and neutrons in the nucleus of an atom.

Front

How many neutrons does the isotope 89Kr have?

Back

53 neutrons (89 - 36 = 53).

Front

What do isotopes of the same element have in common?

Back

Isotopes of the same element have the same atomic number and number of protons.

Front

What is the relationship between protons and electrons in a neutral atom?

Back

In a neutral atom, the number of protons equals the number of electrons.

Front

How many protons does the isotope Titanium-48 have?

Back

22 protons.

Front

What is the significance of the mass number in isotopes?

Back

The mass number indicates the total number of nucleons (protons + neutrons) in the nucleus, affecting the isotope's stability.

Front

What is the difference between isotopes and ions?

Back

Isotopes differ in the number of neutrons, while ions differ in the number of electrons, resulting in a charge.