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pantera1 [17]
3 years ago
15

Select the two elements isolated by the Curies.

Chemistry
2 answers:
ss7ja [257]3 years ago
7 0

The right options are; radium and polonium

The two elements isolated by the Curies are; radium and polonium.

Marie and Pierre Curie discovered the existence of the elements radium and polonium when they conducted pioneering research on radioactivity. They successfully removed radioactive radium salts from the mineral pitchblende in their laboratory. Marie Curie also discovered that the potential to emit radiation does not rely on the structural arrangement of the atoms in a molecule.

Mkey [24]3 years ago
5 0
Radium and polonium is the answer to this question. I hope I helped out!
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The surface tension of which of the following liquid is maximum?
Elden [556K]
The cohesive forces between liquid molecules are responsible for the phenomenon known as surface tension<span>. I think the correct answer is option A. H2O will have the highest surface tension due to the hydrogen bonds that are present. Hope this answers the question. Have a nice day.</span>
8 0
3 years ago
Which structural feature will differ among an ester, an alcohol, and an aldehyde, regardless of which examples are being compare
AlekseyPX

Answer:

The functional group

Explanation:

A functional group defines a hydrocarbon. an ester the functional group is an O- alkyl group while that one of an alcohol is -OH group. An aldehyde is a functional group on its own.

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3 years ago
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5 0
2 years ago
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An atom of gold has a mass of 3.271 X 10-22 g. How many atoms of gold are in 5.00 g of gold? (Give your answer in scientific not
Kobotan [32]

Answer:

1.53 × 10²² atoms Ag

Explanation:

Step 1: Define conversions

3.271 × 10⁻²² g = 1 atom

Step 2: Use Dimensional Analysis

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Step 3: Simplify

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1.52858 × 10²² atoms Ag ≈ 1.53 × 10²² atoms Ag

5 0
2 years ago
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KATRIN_1 [288]

Explanation:

Beryllium is a group 2 element and its atomic number is 4. Electronic configuration of beryllium is 1s^{2}2s^{2}.

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Therefore, a beryllium atom upon losing two valence electrons will acquire a +2 charge.

Thus, we can conclude that the net ion charge of Beryllium is +2.

7 0
2 years ago
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