Which of the following pairs of elements is most likely to form an ionic compound? calcium and iodine, nitrogen and phosphorus, fluorine and sulfur, it sodium and lithium

How have the greenhouse gasses increased from the year 2000 to 2018

Use this information to determine the number of calends electrons in the atoms. which of the following correctly compares the stability of the two atoms? a) both are unreactive b) both are highly reactive c) a is unreactive and d is reactive d) a is reactive and d is unreactive

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