Ions & Isotopes

Front

What is an ion?

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

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.

Front

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

Back

Number of neutrons = Atomic mass - Number of protons.

Front

What is the atomic mass of an element?

Back

The atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

What is the significance of the atomic number?

Back

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

Front

How many protons does carbon-14 have?

Back

Carbon-14 has 6 protons.

Front

What is the average atomic mass of an element with multiple isotopes?

Back

The average atomic mass is calculated by taking into account the relative abundances and masses of each isotope.

Front

If an element has an atomic mass of 51.996, what can you infer about its isotopes?

Back

The average atomic mass suggests that the isotopes contributing to this average are likely around this mass, with some being more abundant than others.

Front

What does it mean if an isotope is more abundant?

Back

A more abundant isotope contributes more significantly to the average atomic mass of the element.

Front

How do you find the percent abundance of an isotope?

Back

Percent abundance can be calculated using the formula: (mass of isotope * percent abundance + mass of other isotopes) / average atomic mass.