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polonium crystallizes in a simple cubic unit cell with an edge length of 3.36A. 1. what is the volume of the unit cell? 2. what is the volume of atom in the unit cell? 3. what i
No. of valence orbitals- No of Hybrid orbitals.Apply the formula for no. of hybrid orbitals.If it exceeds 4 then the answer is 0.
Which of the following is not isoelectronic : (1) Na + (2) Mg 2+ (3) O 2- (4) Cl - Ans:(d)Cl -
INTRODUCTION : Alcohol is one of the most important chemicals used in the laboratories. In Biology and Chemistry laboratories it is used almost every day. In this exercise you wil
Calculate the pH of 0.100 L of a buffer solution that is 0.22M in HF and 0.53M in NaF
Nucleophilic aromatic substitution reaction The product is formed by a nucleophilic aromatic substitution reaction in which chloride is displaced by hydroxide ion. The product
Which of the following are isoelectronic species I= CH + 3 , II-NH 2 , III- NH + 4 , IV-NH 3 (1) I, II, III (2) II, III, IV (3) I, II
Which of the following explains the sequence of filling the electrons in different shells: (1) Hund's rule (2) Octet rule (3) Aufbau principle (4) All of these Ans
what is the relationship between the rate of cooling and the size of crystals?
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