How many elements exist as gases in their natural state?

Answer 1

There are 11:

Name: Nitrogen Symbol: N

Type: Non-Metal Atomic weight: 14.0067

Density @ 293 K: 0.0012506 g/cm3 Atomic volume: 17.3 cm3/mol

Discovered: Nitrogen was discovered by Daniel Rutherford in Scotland in 1772. Rutherford removed oxygen and carbon dioxide from air and showed that the residual gas could not support combustion or living organisms. He called his discovery noxious air.

Name: Oxygen Symbol: O

Type: Non-Metal, Chalcogen Atomic weight: 15.9994

Density @ 293 K: 0.001429 g/cm3 Atomic volume: 14.0 cm3/mol

Discovered: Oxygen was discovered in 1774 by J. Priestley in England and independently by C. W. Scheele in Sweden. The word oxygen is derived from the Greek words 'oxys' meaning acid and 'genes' meaning forming.

Name: Fluorine Symbol: F

Group: Halogen Atomic weight: 18.998403

Density @ 293 K: 0.001696 g/cm3 Atomic volume: 17.1 cm3/mol

Group: Halogen Discovered: 1886

Name: Chlorine Symbol: Cl

Type: Halogen Atomic weight: 35.453

Density @ 293 K: 0.003214 g/cm3 Atomic volume: 22.7 cm3/mol

Discovered: Chlorine was produced first in 1774 by Carl Wilhelm Scheele, who observed the greenish-yellow gas released by the reaction of pyrolusite (manganese dioxide) with the substance we now call hydrochloric acid. Scheele mistakenly thought the resulting gas contained oxygen. In 1810, Sir Humphry Davy confirmed this gas was an element, not a compound. He named it chlorine, from the Greek word 'chloros', meaning pale green.

Name: Helium Symbol: He

Group: Noble Gas Atomic weight: 4.00260

Density @ 293 K: 0.0001787 g/cm3 Atomic volume: ?

Group: Noble Gas Discovered: 1895

Name: Neon Symbol: Ne

Type: Noble Gas Atomic weight: 20.179

Density @ 293 K: 0.0009 g/cm3 Atomic volume: 16.7 cm3/mol

Discovered: Neon was discovered in 1898 by William Ramsay and Morris Travers during experiments with liquid air. The name comes from the Greek word 'neon', meaning new.

Name: Argon Symbol: Ar

Type: Noble Gas Atomic weight: 39.948

Density @ 293 K: 0.001784 g/cm3 Atomic volume: 22.4 dm3/mol at 0 oC, 101.325 kPa.

Discovered: 1894 by Lord Rayleigh and Sir William Ramsay who sought to explain why nitrogen from air appeared to be heavier than nitrogen released from compounds. They discovered that air-sourced nitrogen contained another gas that is nearly one-and-a-half times denser than nitrogen. After isolating the new gas, the first of the noble gases to be discovered, the scientists named it argon ("the inactive one") and found it made up almost one percent of air. Rayleigh said, "Argon must not be deemed rare. A large hall may easily contain a greater weight of it than a man can carry."

Name: Krypton Symbol: Kr

Group: Noble Gas Atomic weight: 83.80

Density @ 293 K: 0.003708 g/cm3 Atomic volume: 38.9 cm3/mol

Group: Noble Gas Discovered: 1898

Name: Xenon Symbol: Xe

Group: Noble Gas Atomic weight: 131.30

Density @ 293 K: 0.00588 g/cm3 Atomic volume: 37.3 cm3/mol

Group: Noble Gas Discovered: 1898

Name: Radon Symbol: Rn

Group: Noble Gas Atomic weight: 222

Density @ 293 K: 0.00973 g/cm3 Atomic volume: 50.5 cm3/mol

Group: Noble Gas Discovered: 1900

Source: http://www.chemicool.com

Answer 2

There are 11 elements that exist as gases in their natural state at room temperature and pressure. These elements are hydrogen, nitrogen, oxygen, fluorine, chlorine, helium, neon, argon, krypton, xenon, and radon.

Answer 3

11, H, He, O, N, F, Ar, Ne, Kr, Cl, Xe, Rn

Answer 4

11