Question:

What kind of ion will oxygen (O) form? [Pg. No. 174]

Answer: Verified

Oxygen has an atomic number of 8 and its electronic configuration is 2, 6. It has 6 valence electrons and needs 2 more electrons to complete its octet.

Therefore, an oxygen atom gains 2 electrons and forms a negative ion (anion) called the oxide ion.

$O + 2e^- \rightarrow O^{2-}$

Oxygen forms a divalent negative ion, O²⁻ (oxide ion).

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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

What kind of ion will oxygen (O) form? [Pg. No. 174]

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