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Which of the following elements is considered as a metalloid?

Option 1 -

Sc

Option 2 -

Pb

Option 3 -

Bi

Option 4 -

Te

0 1 View | Posted 2 months ago
Asked by Shiksha User

Similar Questions for you

An evacuated glass vessel weights 40.0g when empty, 135.0g when filled with a liquid of density 0.95 g mL-1 and 40.5 g when filled with an ideal gas at 0.82 atm at 250 K. The molar mass of the gas in g mo-1 is:

(Given: R = 0.082 L atm K-1 mol-1)
P
Payal Gupta

Wt of liquid = 135 – 40 = 95 gm

Volume of liquid = wt.density=950.95=100ml

Hence volume of vessel = 100 ml = 0.1 lit from ideal gas equation,

M=dRTP=0.50.1×0.0821×2500.82

∴M=125  g/mol

Element “E” belongs to the period 4 and group 16of the periodic table. The valence shell electron configuration of the element, which is just above “E” in the group is
P
Payal Gupta

General valence shell electronic configuration of group 16 elements is ns2np4. For 3rd period element which is above element “E” is 3s23p4

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