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PolarNik [594]
3 years ago
14

How many valence electrons does xenon have

Chemistry
1 answer:
tekilochka [14]3 years ago
4 0

Eight valence electrons.

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A blood specimen is collected in a heparin-containing tube for calcium and magnesium determination. Upon centrifugation, the pla
Firdavs [7]

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False hypermagnesaemia

Explanation:

Magnesium is predominantly an intracellular divalent action and it is important for optimal cellular function. It is an essential cofactor to many enzymes as well as being important for membrane function.

The body contain about 1 mol (approximately 25g) of magnesium.

Hemolyzed specimen will result in release of magnesium from intracellular to extracellular, causing elevation of the blood level of magnesium. This is a false hypermagnesaemia because it doesn't represent the real blood level.

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Why are metals grouped together
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Because their atoms have the same number of electrons in the highest occupied energy level
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When the first American astronauts were planning to walk on the Moon, they knew that the gravity on the Moon was less than the g
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Their weight.

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What is the mass of helium atom whose atomic weight is 4.003 g/mol?
tino4ka555 [31]

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• molar mass of He (from the periodic table) = 4.003 g/mol

• Avogadro’s Number: Avogadro’s number gives us the number of entities present in 1 mole: 6.022 × 1023 He atoms in 1 mole of He

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What does an electromagnetic spectrum refer to?
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