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WHAT are the properties of group13 elements?
why lanthanide series is called lanthanide?
Q. What is SI unit of energy? Ans. The SI unit of energy is called the joule. A joule is a pretty small mount of energy so often chemists will use the unit kJ =1 kilojoule
The radius of electron in the first excited state of hydrogen atom is: (1) a 0 (2) 4a 0 (3) 2a 0 (4) 8a o
Q. Describe about states of matter? Under usual conditions matter exists in three different physical forms called the states of matter -solid or liquid or gas. Solid matter
Electrolytes are compound containing: (1) Electrovalent bond (2) Covalent bond (3) Coordinate bond (4) Hydrogen bond Ans: Electrovalent bond
obtain the mole of substance in the following. 7.05g Br2
Which one of the following explains light both as a stream of particles and as wave motion: (1) Diffraction (2) γ= h/p (3) Interference (4) Photoelectric effect
Classic flame photometric experiment: In a classic flame photometric experiment, a solution of the analyte is aspirated within the burner and dispersed into the flame as a fin
Q. Show the Isolation of Important Transition Metals? Involved in the extraction of metals. Describe the extraction of important transition metals of the first transition serie
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