Inquiry-into-life-15th-maderinquiry-into-life-15th-mader Study guides, Class notes & Summaries

3. The chemical reactivity of an element is dependent on A. the number of protons. B. the arrangement of neutrons. C. the number of electrons in the outermost shell. D. the number of protons and neutrons. E. the number of electrons in the inner shell. It is the outermost shell of an atom that can potentially react with electrons in the outermost shells of other atoms. The protons and neutrons remain in the nucleus and do not engage in chemical reactions. Bloom's Level: ...

1. If an element has an atomic number of 12, how many electrons are in its outermost shell? A. 1 B. 10 C. 8 D. 2 E. 12 Two electrons fill the innermost shell and eight fill the next, leaving two for the outermost shell. Bloom's Level: Apply Figure: 2.06 Learning Outcome: 2.01.02 Section: 2.01 Topic: Chemistry 2-1 Full file at 2. If an element has an atomic number of 15, then A. the atomic mass must also be 15. B. the atom has 15 electrons. C. there are 7 ...