Question:

Oxygen is sometimes represented as O and sometimes as O₂. What is the difference between these symbols? [Pg. No. 162]

Answer: Verified

O represents a single oxygen atom, whereas O₂ represents an oxygen molecule made up of two oxygen atoms chemically combined. Oxygen gas present in the atmosphere exists mainly as O₂.

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More NCERT Questions

Metal M, with two electrons in its valence shell (M shell), reacts with oxygen to form a compound that is slightly soluble in water. Predict its: (A) formula (B) type of bond (C) electrical conductivi Find the molecular mass of nitric acid (HNO3). Atomic mass — H = 1 u; N = 14 u; O = 16 u. [Pg. No. 179] Find the molecular mass of methane (CH₄). Atomic mass — C = 12 u; H = 1 u. [Pg. No. 179] An element X has six electrons in its outer shell and forms a diatomic molecule. (A) Why would that be so? (B) What kind of bond would it form? (C) Draw the structure of the molecule it would form. (D

Oxygen is sometimes represented as O and sometimes as O₂. What is the difference between these symbols? [Pg. No. 162]

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