How many electrons are in the 3d sublevel for cobalt? Express your answer as a signed integer.   B) How many electrons are in the 4p sublevel for arsenic? Express your answer as a signed integer.   C) How many electrons are in the 5p sublevel for iodine? Express your answer as a signed integer.   D) How many electrons are in the 3s sublevel for magnesium? Express your answer as a signed

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