Why is oxygen a gas but sulphur is solid?

Why is oxygen a gas but sulphur is solid?

Oxygen is smaller in size compared to sulphur. Oxygen exists as (O=O) with weak intermolecular forces of attraction whereas Sulphur exists in puckered structure, octatomic (S8) forming S-S bond with strong forces if attraction. Hence Oxygen exists as gases whereas Sulphur exists as solid.

Why is oxygen diatomic whereas sulphur Octaatomic?

Why oxygen molecule is diatomic whereas sulphur molecules is octa atomic? Oxygen atom is small and hence capable of forming pπ-pπ multiple bond and thus exists as O2. On the other hand, due to large size, sulphur does not form pπ-pπ multiple bond and form S8 rings.

Why is Dioxygen a gas but sulphur a solid class 12?

Oxygen is smaller in size as compared to sulphur. Also, the intermolecular forces in oxygen are weak van der Wall’s, which cause it to exist as gas. On the other hand, sulphur does not form M2 molecule but exists as a puckered structure held together by strong covalent bonds. Hence, it is a solid.

Why oxygen exist in O2 but sulphur exist in S8?

Atomic size of oxygen is smaller. It can form σ– bond as well as π– bond between O and O atoms and exists as O2. It can not form π – bond together with s – bond between S and S atoms. To satisfied its valency it forms S8 molecule in which all atoms of sulphur bonded with only σ– bond .

Why oxygen is a gas?

It is a very reactive non-metal and forms oxides with other elements. They have low densities and can be compressed easily. As the property of gases having no shape and volume, oxygen do not have a fixed shape or volume. Hence for these reasons oxygen remains as gas.

Why is oxygen called a gas give reason?

As the property of gases having no shape and volume, oxygen does not have a fixed shape or volume. Oxygen flows from areas of higher to lower concentrations. Hence for these reasons oxygen remains as gas. Therefore, Oxygen is called gas.

Why oxygen is a diatomic gas?

Oxygen exists as a diatomic molecule in nature when it is not combined with any other element. It forms O2 molecule because it is stable when it is uncombined. In order to achieve the octet configuration, they share their unpaired electron with the unpaired electron of another element and result in a diatomic molecule.

Why sulphur does not exist as diatomic in nature?

Because of its larger size, compared with oxygen, the sulphur atom tends not to form double bonds with other sulphur atoms. S8 is a cyclic, non-planar (to avoid bond strain) molecule.

Why does O2 exist as a gas?

Oxygen occurs in the form of O2 molecule because of the pπ−pπ bonding formed within its molecule. Due to this reason the intermolecular forces present in oxygen are weak van der Waals forces. As a result of these reasons oxygen exists as gas.

Why H20 is liquid and H2S is gas?

H2O is liquid because of its ability to form hydrogen bonds which is possible only in case of F , O and N because of their high electronegativity. While in case of H2S there is no hydrogen bond formation . Hence H20 is liquid while H2S is gas .

Why is oxygen called as a gas Give two reasons?

Oxygen remains in gaseous state at normal temperature and pressure. As the property of gases having no shape and volume, oxygen do not have a fixed shape or volume. Oxygen flows from areas of higher to lower concentrations. Hence for these reasons oxygen remains as gas.