9ii Structure of Atom

Choose the particle that has no charge.

• nucleus
• neutron
• proton
• electron

The------ particle determines the identity of what element you have'

• electron

• proton

• neutron

• valence shell

Which particles make up the nucleus of an atom?

• protons and neutrons
• electrons and protons
• electrons, protons, and neutrons
• electrons and neutrons

What is the atomic number of the atom pictured? 

• 11
• 12
• 22
• 23

What is the atomic mass of the atom pictured? 

• 11
• 12
• 22
• 23

Oxygen’s atomic number is 8. This means that an oxygen atom must have

• 8 electrons
• 8 protons
• 8 neutrons
• a mass number of 8

 What is the mass number of this element?

• 5
• 27
• 32
• 59

What are valence electrons?

• electrons in the first orbital always.

• nucleus

• the outermost shell

• the number of electrons present in the outermost orbital

WhIch sub atomic particle vary between isotopes of an element?

• protons, electrons, and atomic mass

• protons, electrons, and atomic number

• neutrons and electrons

• neutrons only

How many neutrons in C-14?

• 6
• 7
• 14
• 8