Atomic Structure Test

Front

What happens to the element if two more neutrons are added?

Back

It remains the same element.

Front

How many neutrons does an Oxygen atom have?

Back

8

Front

How many protons are in Sodium?

Back

11

Front

What type of atom or ion is represented by 10 protons, 9 neutrons, and 8 electrons?

Back

It is a +2 ion.

Front

What is the number of neutrons in the isotope mentioned?

Back

20

Front

Define an isotope.

Back

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

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is the charge of a neutral atom?

Back

A neutral atom has no overall charge.

Front

What is the mass number of an atom?

Back

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

Front

How do you determine the number of electrons in a neutral atom?

Back

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