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liubo4ka [24]
3 years ago
9

When an atom loses one or more electrons, this atom becomes a

Chemistry
2 answers:
Kamila [148]3 years ago
5 0

1.) it becomes positive with a smaller radius.
ozzi3 years ago
3 0

Answer;

(2) positive ion with a radius larger than the radius of this atom

Explanation;

-Atomic radius of an element is the measure of the size of its atom, while the ionic radius measures the size of an ion.

-When the atom loses its outermost electron it forms positively charged or cation. The ionic radius of the cation will be smaller than the atomic radius because the atom loses an electron energy shell.

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Which of the following solutes will lower the freezing point of water the most? NaCl, CaCl2!or AlBr3
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This uses the concept of freezing point depression. When faced with this issue, we use the following equation:
ΔT = i·Kf·m
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Change in freezing point = vant hoff factor * molal freezing point depression constant * molality of solution
Because the freezing point depression is a colligative property, it does not depend on the identity of the molecules, just the number of them.
Now, we know that molality will be constant, and Kf will be constant, so our only unknown is "i", or the van't hoff factor.
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A compound contains potassium, nitrogen, and oxygen. the experimental analysis gave values of 45.942 % potassium and 16.458 % ni
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The radioactive substance cesium-137 has a half-life of 30 years. The amount At (in grams) of a sample of cesium-137 remaining a
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<u>Answer:</u> The amount of sample left after 20 years is 288.522 g and after 50 years is 144.26 g

<u>Explanation:</u>

We are given a function that calculates the amount of sample remaining after 't' years, which is:

A_t(t)=458\times (\frac{1}{2})^{\frac{t}{30}

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Putting values in above equation:

A_t(t)=458\times (\frac{1}{2})^{\frac{20}{30}

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  • <u>For t = 50 years</u>

Putting values in above equation:

A_t(t)=458\times (\frac{1}{2})^{\frac{50}{30}

A_t(t)=144.26g

Hence, the amount of sample left after 50 years is 144.26 g

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