Question

Q.16. Write any four properties of oxygen to show its anomalous behaviour. Write any two
uses of helium.​

Answer 1

Explanation:

Color : Colorless.

Phase : Gas. ...

Odor : Oxygen is an odorless gas.

Taste : A tasteless gas.

Conductivity : A poor conductor of heat and electricity.

Solubility : Slightly soluble in water, alcohol and some other common liquids.

Density : It is denser than air.

hope it will be help ful

Answer 2

Answer:

The anomalous behavior of oxygen is due to Small size. High electronegativity and Non-availability of d-orbitals in the valency shell.

Explanation:

Properties of oxygen:

• The gas known as oxygen is tasteless, odourless, and colourless.
• In a scientific setting, water practically cannot dissolve oxygen.
• Oxygen weighs a little bit more than air.
• Oxygen can convert into a liquid state at high pressure and low temperature.
• The colour of liquid oxygen is a little bit blue.
• One of the frequently seen forms of oxygen is dioxygen.
• The most reactive oxygen allotrope that could harm lung tissue is trioxygen. Ozone is the name given to this allotrope.

Uses of helium:

• Divers employ a helium and oxygen combination in place of an air-oxygen mixture.
• In the process of electric arc welding metals, helium is employed to create an inert environment.
• Cryogenics uses helium because it has the lowest boiling point.
• Helium is utilized as an inert-gas environment for welding metals like aluminum.
• it is also employed in rocket propulsion to detect leaks in systems like automobile air conditioners and, because it diffuses quickly, to inflate airbags after an accident.

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