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marshall27 [118]
3 years ago
9

Consider four elements from Group 7A: fluorine in the second period, chlorine in the third period, bromine in the fourth period,

and iodine in the fifth period. Which element has the largest first ionization energy?
Chemistry
1 answer:
lina2011 [118]3 years ago
5 0
<span>Out of the possible answers for this question, fluorine in the second period is correct. Of the four elements fluorine, chlorine, bromine and iodine, fluorine has the largest first ionization energy, with a Enthalpy number of 1681.0. Of all the elements, helium has the highest first ionization energy figure.</span>
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Average kinetic energy of a particle :
0.5 mv^2 = kT/2
so the kinetic energy = kT/2
assuming the same value of K
T1 = -49 + 273 = 224
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E2 / E1 = kT2 / 2 / kT1 / 2
E2 / E1 = T2 / T1
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The next test would be the lime water test.

Explanation:

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3 years ago
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malfutka [58]

<u>Answer:</u> The correct answer is Option A.

<u>Explanation:</u>

To calculate the number of moles of a substance, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

We are given:

Given mass of fluorine = 6 grams

Now, to know the moles, we divide the given mass of fluorine by the atomic mass/molar mass of fluorine.

Thus, the correct answer is Option A.

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