Which Substance Has Covalent Bonds

Q79: Magnesium reacts with oxygen to form<br>A)MgO.<br>B)Mg₂O.<br>C)MgO₂.<br>D)Mg₃O₂.

Q80: In a polar covalent bond,electrons are<br>A)shared equally.<br>B)shared

Q81: How many electrons are there in a

Q82: Which of the following elements has the

Q83: Which substance has nonpolar covalent bonds?<br>A)H₂<br>B)NO₂<br>C)NaBr<br>D)CO

Q85: Calcium reacts with chloride to form<br>A)CaCl.<br>B)CaCl₂.<br>C)Ca₂Cl.<br>D)Ca₂Cl₃.

Q86: A sodium ion,Na⁺,has the same electron configuration

Q87: The number of electrons in a chloride

Q88: What is the formula of potassium sulfate?

Q89: Which of the noble gases does NOT