Atomic Structure

X atom has 10 proton and 11 neutron. How many electron does it have?

• 10

• 11

• 12

• 13

an atom has 10 electrons and 8 neutrons. How many protons does it have?

• 8

• 18

• 10

• 2

Which subatomic particle determines the identity of an element?

• protons

• neutrons

• electrons

The mass number of an isotope is equal to the number of ______ in an atom.

• Protons
• Neutrons
• Protons + Neutrons
•  Electrons

Subatomic particles with a positive charge

• neutrons
• atomic mass
• protons
• isotopes

Subatomic particles that are neutral in charge

• Neutrons
• Protons
• Nucleus 
• Electrons

Atoms of the same element with a different number of neutrons

• Ion

• alloy

• Isotope

• Quarks

A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass

• Electron Shells
• Orbitals
• Electron Cloud
• Nucleus

How many electrons does this atom have?

• 2

• 4

• 6

• 10

Which of the following determines the identity of an element?

• number of protons

• atomic mass

• number of neutrons

• number of shells