strontium chloride is an ionic compound. it is used in fireworks to produce red light. which lewis structure…

strontium chloride is an ionic compound. it is used in fireworks to produce red light. which lewis structure correctly represents strontium chloride? choose 1 answer: ① $cdotmathrm{sr}cdot^{2 - }colonddot{mathrm{cl}}cdot^{+}cdotmathrm{sr}cdot^{2 - }$ ② $mathrm{sr}^{2+}colonddot{mathrm{cl}}colon^{-}mathrm{sr}^{2+}$ ③ $colonddot{mathrm{cl}}cdot^{+}cdotmathrm{sr}cdot^{2 - }colonddot{mathrm{cl}}cdot^{+}$ ④ $colonddot{mathrm{cl}}colon^{-}mathrm{sr}^{2+}colonddot{mathrm{cl}}colon^{-}$

strontium chloride is an ionic compound. it is used in fireworks to produce red light. which lewis structure correctly represents strontium chloride? choose 1 answer: ① $cdotmathrm{sr}cdot^{2 - }colonddot{mathrm{cl}}cdot^{+}cdotmathrm{sr}cdot^{2 - }$ ② $mathrm{sr}^{2+}colonddot{mathrm{cl}}colon^{-}mathrm{sr}^{2+}$ ③ $colonddot{mathrm{cl}}cdot^{+}cdotmathrm{sr}cdot^{2 - }colonddot{mathrm{cl}}cdot^{+}$ ④ $colonddot{mathrm{cl}}colon^{-}mathrm{sr}^{2+}colonddot{mathrm{cl}}colon^{-}$

Answer

Explanation:

Step1: Analyze strontium and chlorine ions

Strontium (Sr) is in group 2 of the periodic table and loses 2 electrons to form a $Sr^{2 +}$ ion. Chlorine (Cl) is in group 17 and gains 1 electron to form a $Cl^{-}$ ion.

Step2: Determine correct Lewis - structure

In strontium chloride ($SrCl_{2}$), one $Sr^{2+}$ ion is surrounded by two $Cl^{-}$ ions. The correct Lewis - structure has a $Sr^{2+}$ ion and two $[Cl:]^{-}$ ions.

Answer:

D. $[\ddot{Cl}:]^{-}[Sr]^{2 +}[\ddot{Cl}:]^{-}$