Isotope Notation / PNE

Front

What is isotope notation?

Back

Isotope notation is a way of representing isotopes of an element, typically written as the element's symbol followed by the mass number (total number of protons and neutrons) as a superscript and the atomic number (number of protons) as a subscript.

Front

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

Back

To find the number of neutrons in an isotope, subtract the atomic number (number of protons) from the mass number (total number of protons and neutrons).

Front

What is the mass number of an isotope?

Back

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

Front

What defines an element?

Back

An element is defined by the number of protons in its nucleus, which is also known as the atomic number.

Front

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

Back

In a neutral atom, the number of protons equals the number of electrons, resulting in no overall charge.

Front

How do you identify an ion from its subatomic particles?

Back

An ion can be identified by the difference between the number of protons and electrons; if there are more electrons than protons, it is a negatively charged ion (anion), and if there are more protons than electrons, it is a positively charged ion (cation).

Front

What is the significance of the atomic number?

Back

The atomic number is significant because it determines the identity of the element and its position in the periodic table.

Front

What is the difference between isotopes of the same element?

Back

Isotopes of the same element have the same number of protons but different numbers of neutrons, resulting in different mass numbers.

Front

How can you determine the element from its isotope notation?

Back

You can determine the element from its isotope notation by looking at the atomic number (subscript) or the element symbol.

Front

What is the charge of an ion with 8 protons and 10 electrons?

Back

An ion with 8 protons and 10 electrons has a -2 charge, making it an anion.