ऑक्सीजन (O)

साभान्म गुणधभ

बौनर्क गुणधभा

अिस्थाएॉ

ऊजाा

इरेक्रॉन्स औय ऑक्सीकयण

Description

Colorless, odorless, tasteless gas; pale blue liquid. Third most abundant element in the universe. It is the most abundant element in the earth's crust, and makes up almost 21% of the atmosphere.

Uses

Used in steel making, welding, and supporting life. Naturally occuring ozone (O3) in the upper atmosphere shields the earth from ultraviolet radiation.

Sources

Obtained primarily from liquid air by fractional distillation. Small amounts are made in the laboratory by electrolysis of water or heating potassium chlorate (KClO3) with manganese dioxide (MnO2) catalyst.

Pronounciation (English)

OK-si-jen

स्थानाॊर्यण

इनर्हास

भें प्राप्र

1774

द्िाया प्राप्र्

Joseph Priestley, Carl Scheele

ऩय प्राप्र

England, Sweden

शब्द उत्ऩवि

From the Greek words "oxy genes" meaning "acid" (sharp) and "forming" (acid former)

मरक्ॊ स