Chemistry Final Part 2

What are valence electrons?

• Electrons in the inner energy levels of an atom
• Electrons in the highest occupied energy level of an atom
• Electrons in the nucleus of an atom
• Electrons in the outermost energy level of an atom

What largely determines the chemical properties of an element?

• Number of protons
• Number of neutrons
• Number of valence electrons
• Number of electrons in the inner energy levels

Which group of elements has one valence electron?

• Group 1A
• Group 2A
• Group 3A
• Group 8A

Which group of elements has four valence electrons?

• Group 1A
• Group 2A
• Group 3A
• Group 4A

Which group of elements has eight valence electrons?

• Group 1A
• Group 2A
• Group 3A
• Group 8A

What is the octet rule?

• Atoms tend to lose valence electrons
• Atoms tend to gain valence electrons
• Atoms tend to share valence electrons
• Atoms tend to achieve the electron configuration of a noble gas

Which type of ions are formed by atoms losing valence electrons?

• Cations
• Anions
• Halide ions
• Transition metal ions

Which type of ions are formed by atoms gaining valence electrons?

• Cations
• Anions
• Halide ions
• Transition metal ions

What is the charge of a sodium cation?

• 1+
• 2+
• 1-
• 2-

What is the charge of a calcium cation?

• 1+
• 2+
• 1-
• 2-