Atomic Structure

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 atom?

Back

The number of neutrons can be calculated by subtracting the atomic number from the mass number (Neutrons = Mass Number - Atomic Number).

Front

What is the mass number of an atom?

Back

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

Front

Where are protons located in an atom?

Back

Protons are located in the nucleus of an atom.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

How many electrons are in a neutral atom?

Back

In a neutral atom, the number of electrons is equal to the number of protons.

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons, and is where most of the atom's mass is concentrated.

Front

What is the relationship between atomic number and element identity?

Back

The atomic number uniquely identifies an element; no two elements can have the same atomic number.

Front

How do you determine the number of electrons in an ion?

Back

To determine the number of electrons in an ion, adjust the number of electrons based on the ion's charge (e.g., a +1 charge means one less electron, a -1 charge means one more electron).