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sattari [20]
3 years ago
12

Which atoms will bond when valence electrons

Chemistry
2 answers:
sergij07 [2.7K]3 years ago
7 0
Since Oxygen is in group 16, this element has 6 valence electrons. Valence electrons like to become as stable as possible and similar to a noble gas, which has 8 electrons. You need to find an element that will transfer its atoms to the oxygen to make 8 electrons. Looking at the periodic table, Selenium is in group 16 and will have 6 valence electrons (6 + 6 = 12). This can't transfer electrons with Oxygen. Hydrogen is in group 1 with 1 valence electron (6 + 1 = 7). This can't transfer electrons with Oxygen. Strontium is in group 2 with 2 valence electrons (6 + 2 = 8). This will transfer electrons to Oxygen, making it the most stable.

The answer is O and Sr. 
kvasek [131]3 years ago
3 0
Because the problem says valence electrons are transferred from one atom to the other, it has to be an "ionic" bond (it's not the "covalent" bond because electrons aren't shared with each other). As a matter of fact, an "ionic" bond is formed when a metal combines with a non-metal or a metalloid. Strontium (Sr) is an alkaline earth metal, which is also a metal, and Oxygen (O) is a non-metal. These two atoms will perfectly form (an) "ionic" bond(s). Therefore, option (2) O and Sr is correct.
Hope this would help :))
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Sidana [21]
Your limiting is CuCI2 and the excess is KI (from what i’ve heard from my tc to find it just use the moles or look at the grams)Do you want me to do the qn and give u the ans or?

Explanation:You have more grams of KI than CuCI2
irl example : I need 200g of flour to bake 1 muffin and 100g of butter.But I have 300g of butter and only 200g of flour.This means I can only bake up to 1 muffin since I got excess grams of butter.But to use up all my 300g of butter I need 400g more of flour.Making my butter the excess while my flour the limiting since I have less of it and it also determines how much muffin would I get at the end of the bake.

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