subatomic structure

They are neutral because the same amount of positively charged protons cancels out the same amount of negatively charged electrons, making the atom have no charge.

An atom is neutral if the number if protons and electrons are? Why?

The larger the diameter of the nucleus, the larger the atom in both diameter and mass.

How does the diameter of the nucleus compare to the diameter of the atom?

The mass of an electron is about 1,830 times smaller than protons and neutrons, so it has very little mass.

How does the mass of an electron compare to protons and neutrons?

The simplest atom has 1 proton and 1 electron. It is hydrogen.

How many subatomic particles are in the simplest atom? What element is the simplest atom?

Sodium has 11 protons as the atomic number tells you that. To find the neutrons, subtract the atomic number from the atomic mass, 23-11 equals 12. Therefore there are 12 neutrons.

The mass number of sodium is 23. How many protons and neutrons does it have?

Electrons are subatomic particles that are found in the energy levels swirling around the nucleus on an electron cloud and are negatively charged.

What are electrons? What is their charge? Where are they located.

Neutrons are a subatomic particle of the nucleus and have no charge, neutral.

What are neutrons? What is their charge? Where are they located?

Protons are subatomic particle of the nucleus and are positively charged.

What are protons? What is their charge? Where art they located?

The three subatomic particles are protons, neutrons, and electrons.

What are the 3 main subatomic particles?

An ion is any atom that has a charge, usually due to exchange of electrons during bonding. A positive ion is an atom that has one or more protons than electrons. A negative ion is any atom that has one or more electrons than protons.

What is an ion? A positive ion? A negative ion?

The nucleus contains protons and neutrons.

What is in the nucleus of an atom?

The atomic number tells how many protons are in the element.

What is the atomic number of an element?

The atomic number of carbon is 6. The atomic number of iron is 26.

What is the atomic number of carbon? Iron?

An isotope is an atom that has the combination of the mass of the protons and neutrons. Electrons are not included because their mass are so minute that is doesn't change the total mass much, therefore they leave it out.

what is the mass number? Why aren't electrons included in the mass number?