Write electron-dot symbols to show the number of covalent bonds a...

Question

Write electron-dot symbols to show the number of covalent bonds and the lone pairs of electrons in the molecules that are formed by reactions between the atoms in Problem 4.34.

Accepted Answer

Welcome back, everyone. Write the electron dot symbol for the molecule formed by the reaction of phosphorus with Constantine. It should show the number of covalin bonds and lone pairs of electrons beginning with phosphorus recall that phosphorus is a group five, a element corresponding to five valence electrons. Whereas a 17 we recall is a group seven a element On the periodic table corresponding to seven valence electrons. So for the reaction, we have phosphorus reacting with our Adam Aston teen, as we stated, phosphorus has five valence electrons. So we would sing, we fill in the electrons first before pairing them up. So we would just have one lone pair on phosphorus. And then for a 17, we counted seven valence electrons. So singly drawing them in, we have 1234. Now pairing them up 56 and seven leaving us with three lone pairs on a 17, we will then recall our trend for electro negativity on the periodic table which increases towards the top right in the direction of flooring. And so that means that based on our trend Astin Tiene being lower than phosphorus on our periodic table has a lower electro negativity than the electro negativity of phosphorus. However, although we would typically have the central atom as being our or at least election negative atom. Sorry, we only have one atom of phosphorus. And so because we have one atom of phosphorus, we can say that therefore, phosphorus is our central atom in our product. So in this case, we have phosphorus surrounded by our three atoms of a 17. So drawing in our phosphorus with its Lone pairs, we have two lone pairs and then it's three other singular electrons around itself in which it can use. And let's also join our electrons on a 17. So each item of a 17 has three lone pairs and a single lone electron. So notice that we can use each of our single loan electrons between a 17 and phosphorus to form a Covalin bonds with the two atoms. So we would form a total of three Covalin bonds and sorry about that three Covalin bonds with our atoms. A 17 and phosphorus. This will now allow phosphorus to have a full octet where it has 2468 electrons around itself in the structure. So it's stable and follows the octet rule. And Aston teen, we can count a total of directly attached 1234567 of its preferred valence electrons being a group seven a atom, meaning that it's stable and happy. And it also has a full octet because it has one co valent bond in three lone pairs around each of our ascent in atoms. So we can note down that we have three Covalin phosphorus Constantine bonds. And then we have one lone pair on phosphorus and three lone pairs on each a 17 adam. And the formula for our product is going to be its chemical formula as P A T sub three for the molecule platinum, three asti tied. And notice that we have three moles of acetate tied or a 17 on our product side. So we're going to place a coefficient of three in front of a 17 on the reactant side to give us a balanced equation. So we can confirm that we have a balanced equation. And for our final answers, we have correctly shown our number of Covalin bonds making up our structure, which is three Covalin bonds. We've also shown that we have the correct amount of lone pairs being £11 phosphorus and three lone pairs on each ascent in Adam. And then are correct structure will correspond directly to choice be in the multiple choice because our other structures given for choices C and D, we can rule out because they're incorrect. So choice be Is the only correct structure given for our compound phosphorus, three Asti tied our final product. And this would be the electron dot symbol for this product. So I hope this helped and let us know if you have any questions

Write electron-dot symbols to show the number of covalent bonds and the lone pairs of electrons in the molecules that are formed by reactions between the atoms in Problem 4.34.

Key Concepts

Covalent Bonds

Electron-Dot Symbols

Lone Pairs

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