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18 Dec 2019

Briefly explain:

a) What property of an atom determines which element it will be? Who discovered that property and how?

b) If elements are arranged by this property, why is it that elements with similar properties often reoccur?

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Nelly Stracke
Nelly StrackeLv2
31 Dec 2019

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Related questions

In the experiment for classifying matter by properties

1. Tap water is often river water that has been filtered andtreated to remove bacteria, but not distilled. Distillation is theevaporation and subsequent condensation of a liquid. Distilledwater is preferred for many common uses such as in steam irons, andas a solvent in analytical chemistry. Explain why distilled wateris better than tap water for these two purposes.

2. (a) Are the properties you described in column 2 of Table 1physical or chemical properties? Briefly explain.

(b) Is solubility a physicval or chemical property? Brieflyexplain.

3. If someone gave you a sample of a metallic element, whatphysical properties might you use to identify the element? Assumeyou have a referance, such as the Handbook of Chemistry andPhysics, that lists physical properties of the elements.

4. Suggest a method for separating a mixture of sugar, powderediron, and sawdust.

The correct answer below is option (C). I need an explanation as towhy this is the correct answer as opposed to the others based ontrends in the periodic table, as it seems to be that there areothers which are correct as well. Thank you.

"Which statement best reflects the organization of the modernperiodic table:
a) Elements are always arranged in order of increasing atomicweights
b) Metallic properties increase going from bottom to top in afamily of elements.
c) nonmetallic properties tend to predominate for elements at thefar right portion of the table.
d) each transition element is placed in the column of the maingroup element that it most closely resembles.
"


16-22 please!

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