Atomic Structure

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

The central region of an atom where its neutrons and protons are is its 

• nucleus 
• electron cloud
• core 
• center 

An atom with atomic number 6 would have how many protons?

• 6
• 12
• 3
• it depends on the electrons

Particles in an atom that are neutral and have no charge are 

• notrons 
• electrons 
• neutrons 
• protons 

What is the atomic number for an element with three protons?

• 2
• 1
• 3
• Li

A particle that moves around the nucleus is a(n)...

• Proton
• Neutron
• Electron
• Quark

In the modern periodic table elements are arranged by:

• atomic mass
• atomic number
• valence electrons
• alphabet

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• atomic mass
• number of protons

What is the number of protons that the element in this image contain?

• 14
• 7
• 21
• 7.007

The first energy level can hold up to how many electrons?

• 8
• 4
• 2
• 5