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Anna11 [10]
3 years ago
10

An atom of which element has the largest atomic radius?

Chemistry
2 answers:
sergejj [24]3 years ago
5 0

Answer:

Cesium

Explanation:

As you go down a Group in the Periodic Table from top to bottom, the number of energy levels or electron shells increases so the atomic radius of the elements increases.

In general, the atomic radius of elements decreases as you go across a Period from left to right.

This means, we would expect that the last element in group 1 to have the largest atomic radius. This is Francium. But the atom with the largest atomic radius is referred to as Cesium.

Why aren't francium atoms the biggest? The usual periodic trend for atomic size places larger atoms at the left of a row and towards the bottom of a column on the periodic table. It's no surprise that cesium is large. But shouldn't francium, in the next period with an even larger valence shell, be even larger?

The answer is "possibly, but we just don't know yet." Francium isn't easy to study. It's the least stable of the first 103 elements; the most stable Fr isotope has a half-life of just 22 minutes The distance between atoms in metallic francium has not yet been measured.

The element which has the largest known atomic radius is Cesium.

enot [183]3 years ago
4 0
You didn't post the whole question. However the answer would be : Mg, according to former questions in this website.

Hope this helps !

Photon
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Answer:

800 lb of pure solvent , 1700 lb of 20% solution and 500 lb of 10% solution will be mixed to form 3000 lb of 13 % solution .

Explanation:

3000 lb of 13% solution is required .

Total adhesive in weight = 3000 x .13 = 390 lb of adhesive

Available = 500 lb of 10% solution = 50 lb of adhesive

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Let the mass  of 20% required be V

mass of adhesive = .20 V

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6 0
3 years ago
How molecules of N2 gas can be present in a 2.5 L flask at 50°C and 650 mmHg?
ratelena [41]

Answer:

0.482 ×10²³ molecules

Explanation:

Given data:

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n = 0.86 atm × 2.5 L /0.0821 atm. mol⁻¹. k⁻¹. L × 323 k

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one mole = 6.022 ×10²³ molecules

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5 0
3 years ago
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3 0
3 years ago
Elle wanted to test how temperature affects the rate of evaporation. She had three setups:
Pie

Answer:

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Explanation:

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