The atom that contains the fewest electrons is __.Multiple choice question.oxygenhydrogenheliumwater

How many lone pairs of electrons does oxygen have in a water molecule?Group of answer choices1642

Which of the following statements regarding the oxygen atom of a water molecule is/are false?Group of answer choicesOxygen is more positively charged than the hydrogen atoms.Oxygen attracts electrons less strongly than the hydrogen atoms.Oxygen is attracted to negatively charged atoms of other molecules.Oxygen is more electronegative than the hydrogen atoms.

Which of the following best describes the photosystem that extracts electrons from the water molecules?Group of answer choicesstrong reductantweak oxidantstrong oxidantweak reductantnone of the above

What is the second most common ion in the seawater?Group of answer choiceschloridemagnesiumoxygensodiumcalcium

Which of the following elements is the most electronegative?Group of answer choicesRuCsSiTeS