The force holding ions together in an ionic crystal is:
A. Covalent bond
B. Hydrogen bond
C. Electrostatic attraction
D. Van der Waals
Answer: Option C
Solution (By JKExamLibrary)
Ionic compounds consist of oppositely charged ions held together by strong electrostatic forces (ionic bonds). This results in high melting points and solubility in polar solvents.
Explanation:
Copper pyrites, also known as chalcopyrite, is the most important and abundant ore of copper. Its chemical formula is CuFeS2. Bauxite is the ore of aluminum, cinnabar is the ore of mercury, and haematite is the primary ore of iron.
Explanation:
In PH₃, phosphorus forms three covalent bonds with three hydrogen atoms, so its valency is 3. It has one lone pair. Its electronic configuration is 2,8,5; shares three electrons.
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