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Shielding of proton by electrons
What is the packet of energy called: (1) Electron (2) Photon (3) Positron (4)Proton Ans: Photon
The first ionization potentials for Na, K, and Rb are 5.138, 4.341, and 4.166 eV, respectively. Assume that the energy level of the outer electron can be represented by a hydrogenl
maximum no of unpaired electrons a)mn2+ b)ti3+ c)v3+ d)fe2+
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
Explain tie-line rule Tie-line rule is applied to determine the compositions of two co-existing phases in a binary phase diagram. Tie line is a horizontal line drawn at the tem
Rubber - polymer It is a polymer that is able of returning to its original size, shape or length later than being deformed or stretched. It a kind of elastomer. Rubber is of tw
Simple and Mixed Amines Secondary and tertiary amines may be categorized as simple or mixed amines as per to all the alkyl or aryl groups attached to the nitrogen atom are simi
We can find a compound is acid or base by using litmus test. Acides turnes red litmus to blue colour, in case of base it turnes blue litmus to red.(or) According to arrhenius
Q. What is a trained sensory panel? A sensory panel is the panel of members of which are capable of giving high reliability of judgements, independent of psychological factors
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