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kipiarov [429]
3 years ago
15

Oxygen (O) is a gas found in the 16th column of the periodic table. What statement is true about oxygen and the other elements i

n that column?
Chemistry
1 answer:
Luba_88 [7]3 years ago
5 0

Oxygen is the most abundant element in erath's crust (46 % by weight). Oxygen is present in Group 16 in the periodic table. The other elements in this period are: Sulphur (S), Selenium (Se), Tellurium (Te). The general electronic configuration of the elements present in Group 16 is: ns² np⁴. Oxygen is smallest in size among other elements in the same group. It exists as O₂ molecule where O=O bond is found. These O₂ molecules are associated through  van der Waal's force of attraction which are very weak, because of that O₂ exists as gas. Except oxygen, other elements do not form divalent molecule and they have  d-orbitals, so they can show catenation property by which large number of atoms are connected via covalent bonds. Hence those elements are not gaseous. Sulphur, Selenium and Tellurium are solid,

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Explanation:

Since these two forces are of equal magnitude and in opposite directions, they balance each other.

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Explanation:

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4 years ago
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3 years ago
Which of the following observations is usually not evidence of a chemical change ?
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D

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4 years ago
If the theoretical yield of a reaction is 0.110 g and the actual yield is 0.104 g , what is the percent yield?
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While,

Actual Yield is the yield which is obtained experimentally. It is always less than theoretical yield because it is not possible to have 100% conversion of reactants into products. Even some amount of product is lost while handling it during the process.

Percentage Yield is Calculated as,

                    %age Yield  =  Actual Yield / Theoretical Yield × 100

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Putting Values,

                    %age Yield  =  0.104 g / 0.110 g × 100

                    %age Yield  =  94.54 %
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3 years ago
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