Isotopes

Front

What are isotopes?

Back

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

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

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

Back

To find the number of neutrons, subtract the atomic number from the mass number (Neutrons = Mass Number - Atomic Number).

Front

What is the mass number of an isotope?

Back

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

Front

What is the relationship between isotopes and atomic mass?

Back

The atomic mass of an element is a weighted average of the masses of its isotopes, taking into account their relative abundances.

Front

How many neutrons does Li-6 have?

Back

Li-6 has 3 neutrons (Mass number 6 - Atomic number 3 = 3 neutrons).

Front

How many neutrons does Li-7 have?

Back

Li-7 has 4 neutrons (Mass number 7 - Atomic number 3 = 4 neutrons).

Front

How many neutrons does Li-8 have?

Back

Li-8 has 5 neutrons (Mass number 8 - Atomic number 3 = 5 neutrons).

Front

What is the charge of an atom with 34 protons and 36 electrons?

Back

The atom has a -2 charge because it has more electrons than protons.

Front

What is the significance of the atomic number in determining an element's properties?

Back

The atomic number determines the element's identity and its position in the periodic table, influencing its chemical properties.