The compound containing a coordinate covalent bond is:
A. H₂O
B. NaCl
C. NH₄⁺
D. CH₄
Answer: Option C
Solution (By JKSSB Mock Tests)
Ammonium ion (NH₄⁺) is formed when NH₃ donates its lone pair to H⁺, forming a coordinate (dative) bond. CH₄ and H₂O have ordinary covalent bonds; NaCl is ionic. In NH₄⁺, all four N–H bonds become equivalent.
Explanation:
Niels Bohr proposed his model in 1913 to overcome the defects of Rutherford's model. He stated that electrons revolve around the nucleus in specific, discrete circular orbits (shells) with fixed energy, and they do not radiate energy while in these orbits, explaining atomic stability.
Explanation:
The Ostwald process is used to manufacture nitric acid. The first step involves the catalytic oxidation of ammonia (NH3) to nitric oxide (NO). This reaction is carried out at about 800°C using a platinum-rhodium gauge catalyst. Iron is used in the Haber process, and V2O5 in the Contact process.
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