Atomic Structure

Sodium has an atomic number of 11, how many protons does this atom have?

• 22
• 11
• 12
• 2

Where is the proton located?

• In the very dense nucleus
• Floating around in the negative electron cloud
• the loose nucleus
• the positive electron cloud

What number on the element key tells you how many protons an element has?

• Atomic Mass
• Element name
• Atomic number
• Element Symbol

Which description about the proton is accurate?

• Positively charged particle with a mass less than 0 amu
• A neutrally charged particle with a mass less than 0 amu
• Positively charged particle with a mass of 1 amu
• A neutrally charge particle with a mass of 1 amu

The following element key shows how many protons?

• 16
• 15.999
• Oxygen
• 8

What is the relative mass of a Proton?

• 1AMU
• 7 lbs
• Mass of 3g
• Less than 1 AMU

Which subatomic particle causes the nucleus to have a positive charge?

• Neutron
• Electrons
• Protons
• Valence electrons

Which subatomic particle along with the protons make up the total mass of an atom.

• Neutron
• Electrons
• Valence electrons
• protons make up all the mass

If Hydrogen has 1 proton, how many valence electrons does it have?

Match the electron shell with how many electrons its capacity is

• 32

• 2nd Shell

• 2

• 3rd Shell

• 8

• 1st Shell

• 18

• 4th Shell