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enot [183]
3 years ago
9

Write the electron configuration for sodium.

Chemistry
1 answer:
Dafna11 [192]3 years ago
4 0

Answer:

1s^2..2s^2..2p^6..3s^1

Explanation:

Since sodium has 11 electrons...its electron configuration is...;

1s^2..2s^2..2p^6..3s^1

;The powers of the energy levels(i.e s,p,d) should all add up to the number of electrons in an atom

*.When writing...please do not separate them.

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Alika [10]

Answer:

D i think. Not sure.

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I mean i just did it myself, and i dont really do chemistry, but I would say D sorrry if i made you get it wrong!!

6 0
3 years ago
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Which has the greatest mass, box of rocks box of paperclips or empty box
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The density of an ordinay rock is close to 3 g/cm^3 wihle the density of the paper clips is close to 8 g/cm^3 (the density of steel), then equal apparent volumes (same box) will contain different mass, being of course the mass of the box with paper clips much higher than that of the box with rocks.
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A section of the periodic table is shown below: A portion of two rows of the periodic table is shown. The first row reads two he
cluponka [151]

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7 0
3 years ago
Consider this reaction:
ryzh [129]

Answer:

I think it's 6 moles are produced

3 0
3 years ago
Consider a sample of helium and a sample of neon, both at 30.0°C and 1.5 atm. Both samples have a volume of 5.0 liters. Which st
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Answer:

A.

Explanation:

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PV = nRT

Since all the parameters are equal for both gases, we can simply deduce that both has the same number of moles of gases.

The relationship between the mass of each sample and the number of moles can be seen in the relation below :

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Now , we have established that both have the same number of moles. For them to have the same mass, they must have the same molar masses which is not possible.

Hence option A is wrong

7 0
3 years ago
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