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Atomic Radii & Ionization Potential

Which of the ...

Question

Which of the following is a noble gas?

A

H e

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B

N_{2}

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C

H_{2}

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D

O_{2}

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Solution

The correct option is A $H e$
$H e$ is a noble gas with 2 electrons in outer shell.

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Gases posses charcteristic critical temperature which depends upo the magnitude of intermolecular forces between the particles. Following are the critical temperatures of some gases.

$\begin{matrix} G a s e s & H_{2} & H e & O_{2} & N_{2} C r i t i c a l t e m p e r a t u r e i n K e l v i n & 33.2 & 5.3 & 154.3 & 126 \end{matrix}$

From the above data what would be the order of liquefaction of these gases? Start writing the order from the gas liquefying first

(a) $H_{2}, H e, O_{2}, N_{2}$ (b) $H e, O_{2}, H_{2}, N_{2}$

(c) $N_{2}, O_{2}, H e, H_{2},$ (d) $O_{2}, N_{2}, H_{2}, H e$

H_{2} H e O_{2} N_{2}

Critical temperature(K) 33.2 5.3 154.3 126

From the above data what whould be the order of liquefaction of these gases?
Start writing the order from the gas liquefying first.

Q. Which of the following gas shows heating effect in Joule- Thomson experiment? 1)O2 2)CO2 3)H2 4)N2

S T P

the order of mean square velocity of molecules of

H_{2}, N_{2}, O_{2}

H B r

A gaseous mixture contain 1 gm of $H_{2},$ 4 gm of $H e$ 7gm of $N_{2}$ and 8gm of $O_{2}$ . The gas having the highest partial pressure is:

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