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Why is Lithium a +1 ion and Chlorine a -1 ion?

The answer lies in how many electron there are in the outer shells of each of the elements and how many electrons they can get or give away to gain a fuller outer shell. Lithium has 1 electron in its oute...

Answered by Tutor381320 D. • Chemistry tutor

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5.00 g of copper(II) carbonate decomposes to form copper(II) oxide and carbon dioxide: CuCO3(g) → CuO(s) + CO2(g). Calculate the maximum mass of carbon dioxide that can be produced. (Mr of CuCO3 = 123.5, Mr of CO2 = 44.0)

Moles of CuCO3 (using triangle) = 5.00/123.5 = 0.0450 mol.1 mol of CuCO3 makes 1 mol of CO2, therefore 0.0450 mol of CuCO3 makes 0.0450 mol of CO2.Using the triangle, mass of CO2 = 44 x 0.0450 = 1.78 gram...

Answered by Clemmie B. • Chemistry tutor

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What is the electron configuration of Oxygen? Give it in terms of shells and subshells.

[He] 2s2 2p4There are 4 potential shells of electrons for the elements in the periodic table, denoted by the first number, 1 to 4.Within each shell there is a matching number of subshells; in shell 1 ther...

Answered by David W. • Chemistry tutor

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