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liberstina [14]
2 years ago
5

For each pair circle the neutral element with the largest atomic radius K or Cs ,Ti or As ,Br or F

Chemistry
1 answer:
Bas_tet [7]2 years ago
6 0

Answer:

Cs

Br

Ti

Explanation:

As we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.  In this way atomic radii of Cs is larger than K and size of Br is larger than F.

As we move from left to right across the periodic table the number of valance electrons in an atom increase. The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell. When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction. The electrons are pull towards the nucleus and valance shell get closer to the nucleus. As a result of this greater nuclear attraction atomic radius decreases

Thus size of As is smaller than Ti.

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Will the calculated Molarity of NaOH be too high or too low or unaffected if the following happen: when you answer the question,
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Answer:

Explanation:

The result will be affected.

The mass of KHP  weighed out was used to calculate the moles of KHP weighed out (moles = mass/molar mass).

Not all the sample is actually KHP if the KHP is a little moist, so when mass was used to determine the moles of KHP, a higher number of moles than what is actually present would be obtained (because some of that mass was not KHP but it was assumed to be so. Therefore, there is actually a less present number of moles than the certain number that was thought of.

During the titration, NaOH reacts in a 1:1 ratio with KHP. So it was determined that there was the same number of moles of NaOH was the volume used as there were KHP in the mass that was weighed out. Since there was an overestimation in the moles of KHP, then there also would be an overestimation in the number of moles of NaOH.

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7 0
3 years ago
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Answer:

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Explanation:

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6 0
2 years ago
What type of reaction is this?—- Large Compound=Element A+Element B
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2 years ago
What scientific instrument is capable of measuring very small masses?​
marusya05 [52]

Answer:

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Explanation:

5 0
3 years ago
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8 0
3 years ago
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