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'Cohesive energy' : In a chemical bond, it is the energy needed to dissociate a solid into isolated atoms or molecules as appropriate.
Q. Give neutralization reactions of salts? Ans. A salt is an ionic compound composed of an anion from an acid and a cation from a base. Sodium chloride, NaCl, and potassiu
Number of protons, neutrons and electrons in the element 231/89 y is: (1) 89, 231, 89 (2) 89, 89, 242 (3) 89, 142, 89 (4) 89, 71, 89 Ans: 89, 142, 89
preparation of silicides
can you give me a sample problem of that topic and the answer step by step
describe the steps necessary in preparing a standard solution of 1.0 molar NaOH
a metal forms 2 oxides. the higher oxide has 80% metal. 0.72g of lower oxide gave 0.8g of higher oxide when oxidised. show that law of multiple proportion is valid?
The molecule having one unpaired electron is: (1) NO (2) CO (3) CN - (4) Fe Ans: NO
Co-ordination covalent bond is produced by the mutual sharing of pair of electrons among two atoms contributed by only one of the combining atoms.
High ionisation energy: The high ionisation energy of helium (24.6 eV) makes it a potential gas to be used in plasma source. The nitrogen gas is generally not used as a pla
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