Which of the following is the chemical formula for Nitric acid?

• HNO₃

• H₃N

• HNO₂

• HNO₄

What is the name given to the compound N₂O₄?

• Dinitrogen tetroxide

• Dinitride tetroxide

• Dinitrogen tetraoxygen

• Nitrate tetraoxide

Which of the following is the correct chemical formula for Oxalic acid?

• H₂C₂O₄

• HCrO₄

• H₂C₂O₇

• HCrO₃

Which of the following is the chemical formula for bromous acid?

• HBrO₄

• HBrO₃

• HBrO₂

• HBrO

What type of bond is formed when two nonmetals share electrons?

• Ionic bond

• Covalent bond

• Metallic bond

• Hydrogen bond

Which of the following is a polar covalent compound?

• Cl₂

• KI

• HBr

• CH₄

Based on the periodic trends for ionization energy, which element has the highest ionization energy?

• Fluorine (F)

• Nitrogen (N)

• Helium (He)

• Magnesium (Mg)

What is the general trend of electron affinity as you move from left to right across a period?

• Decreases

• Increases

• Remains constant

• Fluctuates

Which element has the highest ionization energy in period 2?

• Li

• B

• N

• Ne

Which of the following best describes electron affinity?

• The energy required to remove an electron from an atom.

• The energy change when an electron is added to a neutral atom.

• The tendency of an atom to attract electrons in a bond.

• The size of an atom’s electron cloud.