Electrons Unit Assessment

All electromagnetic waves have the same ________ in a vacuum.

• wavelength
• frequency
• energy
• speed

Identify the element with the following electron configuration:

• Be
• Si
• C
• F

The electron cloud has all of the following characteristics EXCEPT

• it is negatively charged.
• contains nearly all of the atom’s mass.
• it is divided into energy levels.
• contains nearly all of the atom’s volume.

Which of the following statements about electron behavior is not true?

• Electrons closer to the nucleus have more energy than electrons further from the nucleus.
• Light can be emitted when an electron goes from an excited state to a ground state.
• Electrons are always in constant motion.
• Electrons need to absorb energy to move to an energy level away from the nucleus.

Identify the total amount of electrons in an element with this electron configuration:

• 3
• 5
• 11
• 15

Identify the number of valence electrons in an element with this electron configuration:

• 3
• 5
• 11
• 15

Identify the number of energy levels in an element with this electron configuration:

• 1
• 2
• 3
• 5

Which of the following statements is true about anions?

• Typically nonmetals
• Typically metals
• Tend to share electrons
• Tend to have positive oxidation numbers

Two atoms have a difference in electronegativity of 2.34. What type of bond will they most likely form?

• Covalent
• Polar covalent
• Ionic
• They will not form a bond.

Two oxygen atoms have a difference in electronegativity of 0. What type of bond will they form?

• Covalent
• Polar covalent
• Ionic
• They will not form a bond.