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The ionization energy of hydrogen atom is -13.6eV. The energy required to excite the electron in a hydrogen atom from the ground state to the first excited state is (Avogadro's constant = 6.022 × 1023):
(1) 1.69x 10-20J
(2) 1.69x 10-23J
(3) 1.69x 10-23J
(4) 1.69x 10-25J
Ans: 1.69x 10-23J
Chemotherapy - chemistry in action The phrase chemotherapy that literally means chemical therapy or chemical treatment was coined in the year 1913 by Paul Ehrlich, the father o
Q. What do you mean by Dietary fibre? Dietary fibre is an imporatant ingredient in food and comprises of a diverse group of plant substances viz. celluloses, hemicelluloses, l
nuclear quadruple resonace
what could be the distillate present in acetaldehyde after preparation in lab
Geiger Marsden experiment The Rutherford experiment (also known as the Gold foil experiment or the Geiger-Marsden experiment) was an experiment to probe the structure of the at
The electronic configuration of a dipositive metal M 2+ is 2, 8, 14 and its atomic weight is 56 a.m.u. The number of neutrons in its nuclei would be: (1) 30 (2)32
Assume that we want to make buffer by dissolving in water some amount of the compound which we selected by the table as given below; After that adding either strong acid (f
Synthesis of di and tri substituted benzenes
1. A laboratory animal exercised on a treadmill that was connected to a weight with a mass of 250. g through a pulley. The work done by the animal raised the weight through 1.32 m.
Hno3 is aded to Ag ION then form Agcl so from where cl ion come
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