In the image below we see, from left to right, the Pixel (5-inch), Nexus 5X (5.2-inch), Pixel XL (5.5-inch), and the Nexus 6P (5.7-inch). Compared to the Nexus devices, itâs quite impressive how much Google has trimmed down the overall size of these smartphones.
An atom of calcium has 2 valence electrons and an atom of sulfur has 6 valence electrons how many lone pairs of electrons are present in the lewis structure of calcium sulfur. 1. Follow.
We've used 6. And then around the outside atoms. So we have 6, 8, 10, and 24. We have two left over. We'll put them right here on the central atom. So we've used all 26 valence electrons. The structure looks pretty good. Each of the atoms has an octet. We've used the 26 valence electrons. So this is a possible structure for the sulfite ion, SO3 2-. Since Sulfur is in the third period on the periodic table, it can hold more than eight valence electrons. So we should check our formal charges here to see if this is the best structure. For the Sulfur, on the periodic table, it has 6 valence electrons. We have here, on the Lewis structure, 2 nonbonding; and then these right here are all involved in bonds, so 6 over 2. Six minus 2 minus 6 over 2 is a positive 1 for the central Sulfur. For the Oxygens; and they're all the same, so we'll just do one; on the periodic table, 6 valence electrons.