Which of the following is the electron dot formula for an atom of strontium?

Question

Quizplus · Accepted Answer

Strontium has 38 electrons. To write its electron dot formula, we first write its symbol (Sr), surrounded by dots representing its valence electrons. Strontium is in group 2 of the periodic table, so it has 2 valence electrons. Therefore, the correct electron dot formula is (b). (a), (c), (d), and (e) are incorrect because they show a different number or arrangement of dots.

Which of the Following Is the Electron Dot Formula for an Atom