Nuclear Notation & Atoms

Which of the following represent an atom containing 9 protons, 10 neutrons, and 6 electrons?

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• 
• 
• 

Which subatomic particle has a negative charge?

• proton

• neutron

• electron

• cybertron

The number of protons in an element can be found by:

• looking up the group the element is in.
• subtracting the atomic mass from atomic number
• looking up the atomic mass
• looking up the atomic number

A neutral atom of the element sodium has 11 protons and ____ electrons.

• 22
• 23
• 8
• 11

What is the mass number?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

What is the atomic number of this atom?

• 4
• 5
• 9
• none of the above

isotopes of the same element have a different

• number of protons

• number of electrons

• number of neutrons

• atomic number

In standard nuclear notation, what does X represent?

• The position of the element of the periodic table

• The name of the element

• The chemical symbol for the element

• The date of discovery of the element

In standard nuclear notation, what does A represent?

• The number of nucleons

• The number of neutrons

• The number of protons

• The number of electrons

In standard nuclear notation, what does Z represent?

• The number of nucleons

• The number of neutrons

• The number of protons

• The number of electrons