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Xenon Oxyfluorides

Which one of ...

Question

Which one of the following noble gases is not formed in atmosphere?

A

R n

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B

K r

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C

N e

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D

A r

$

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Solution

The correct option is A $R n$
Radon is a radioactive element and is not found in the atmosphere.

Option A is correct.

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Q. Noble gases (like He, Ne, Ar, Kr etc.) are isolated from air. One of the steps is/are:

Q. The noble gases are a group of chemical elements with very similar properties. The six noble gases that occur naturally are helium (He), neon (Ne),argon (Ar), krypton (Kr), xenon (Xe), and the radioactive radon (Rn).The noble gases are:
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Q. Read below given tabular form and answer the questions.

Element	Electronic configuration	Element	Electronic configuration
He	$1 s^{2}$	Kr	$4 s^{2} 4 p^{6}$
Ne	$2 s^{2} 2 p^{6}$	Xe	$5 s^{2} 5 p^{6}$
Ar	$3 s^{2} 3 p^{6}$	Rn	$6 s^{2} 6 p^{6}$

Write the names of 'noble gas' elements.

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