ESS Atomic Structure

Which is a true statement about atoms

• Atoms of different elements can have the same number of protons.

• Atoms can never combine with any other atoms.

• Atoms of the same element may have different mass numbers.

• Atoms without a charge must have a different number of protons and electrons.

Which atomic particle has about the same mass as a neutron?

• electron

• proton

• isotope

• nuclide

Which term describes the three-dimensional region around a nucleus where an electron may be found?

• electron cloud

• spectral line

• nuclear ring

• energy path

How many electrons can occupy the first energy level (ring)

• 1

• 2

• 6

• 8

Which element has 8 protons?

• nitrogen

• oxygen

• beryllium

Carbon-12 and Carbon-13 have different:

• Atomic numbers

• Number of neutrons

• Number of electrons

• Number of protons

Sulfur has an average atomic mass of approximately 32.066 u. Which sulfur isotope is the most abundant?

• Sulfur - 32

• Sulfur - 33

• Sulfur - 34

• Sulfur - 36

Which subatomic particle has a positive charge

Which subatomic particle has a negative Charge

Which subatomic particle has a neutral charge