The property of an atom that's equal to the number of protons is called ___.

• atomic mass

• atomic number

• atomic weight

• atomic size

The mass number of an atom is equal to the

• atomic weight

• the sum of protons and electrons

• the sum of protons and neutrons

• the sum of electrons and neutrons

Check all that are correct

Which of the following are properties of metals?

• Mostly gases at room temperature.

• Dull

• Left side of the Periodic Table

• Good Conductor of heat and electricity

• Ductile

What is the mass number?

What is the atomic number?

How many electrons are present?

An atom with an atomic number of 15 has 15 protons and ___ electrons.

Metals are on the left side of the zig zag line and nonmetals, with exception of Hydrogen, are on the right side of the zig zag line.

• True

• False

What is the atomic mass of Arsenic?

• 33

• 107

• 75

Which will have the largest ionization energy: Ag, Rb, I, or Sn?

• Ag

• Rb

• I

• Sn