HESI A2 Practice Test Question from HESI A2 Tutor Lesson: Chemistry
Please see the question below. Scroll down for the correct answer and video explanation.
HESI A2 Practice Test Answer Explanation
The correct answer is D. Lose two electrons. Atoms gain or lose electrons, not protons, to form ions. Like other metals in group 2, strontium will lose its two valence electrons to become stable.
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[Source: HESI A2 Online Course Lesson: Chemistry]