ahmedabudief

Dr. Ahmed Mohamed Abu-Dief

Professor - Professor of Physical and Inorganic Chemistry

Faculty of science

Address: Behind hospital of Sohag University - Ali Ebn Abi Taleb Street

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2019-11-22 10:40:01 | 26 | Physical Chemistry 3
Bohr’s Theory
ACCORDING TO BOHR’S THEORY, CALCULATE THE ENERGY OF THE THIRD LEVEL OF HYDROGEN ATOM. (RH = 2.179 X 10-18 J)ACCORDING TO BOHR’S THEORY, CALCULATE THE ENERGY OF THE THIRD LEVEL OF HYDROGEN ATOM. (RH = 2.179 X 10-18 J)ACCORDING TO BOHR’S THEORY, CALCULATE THE ENERGY OF THE THIRD LEVEL OF HYDROGEN ATOM. (RH = 2.179 X 10-18 J)ACCORDING TO BOHR’S ... Read more

2019-11-22 10:38:45 | 73 | Physical Chemistry 3
molecular spectra
* COMPARE BETWEEN ATOMIC AND MOLECULAR SPECTRA. (1 MARK) Read more

2019-11-22 10:38:12 | 33 | Physical Chemistry 3
Hamiltonian2
* THE HAMILTONIAN FOR THE ELECTRON AND A NUCLEUS OF MASS MN IS ………………………………………………………………………………………………………………………………………………………………………………………………THE HAMILTONIAN FOR THE ELECTRON AND A NUCLEUS OF MASS MN IS ………………………………………………………………………………………………………………………………………………………………………………………………THE HAMILTONIAN FOR THE ELECTRON AND A NUCLEUS OF MASS MN IS ……………………………………………………………………………………………………………………………………………………………………………………………… Read more

2019-11-22 09:54:53 | 99 | Physical Chemistry 3
ionization energy
* THE MINIMUM ENERGY REQUIRED TO REMOVE AN ELECTRON FROM N = 1 TO N = ∞ IS CALLED: * The kinetic energy * The ionization energy * The emission energy * The work function Read more

2019-11-22 09:52:34 | 102 | Physical Chemistry 3
Balmer series
* FROM THE SPECTRA OF A HYDROGENIC ATOM AND FOR THE BALMER SERIES, THE N1 IS EQUAL FROM THE SPECTRA OF A HYDROGENIC ATOM AND FOR THE BALMER SERIES, THE N1 IS EQUAL FROM THE SPECTRA OF A HYDROGENIC ATOM AND FOR THE BALMER SERIES, THE N1 IS EQUAL a)1 b) 2 c) 3 d) 4 Read more

2019-11-22 09:45:07 | 75 | Physical Chemistry 3
radial wavefunctions2
* WHICH OF THE FOLLOWING STATEMENT IS TRUE FOR THE RADIAL WAVEFUNCTIONS? * The radial wavefunctions depend on the values of both n and _l _ * The radial wavefunctions depend on the values of m_l_ . * Both (a) and (b) are true * Both (a) and (b) are wrong. Read more

2019-11-22 09:43:06 | 85 | Physical Chemistry 3
allowed
* WHICH OF THE FOLLOWING TRANSITIONS ARE ALLOWED IN THE NORMAL ELECTRONIC EMISSION SPECTRUM OF AN ATOM: WHICH OF THE FOLLOWING TRANSITIONS ARE ALLOWED IN THE NORMAL ELECTRONIC EMISSION SPECTRUM OF AN ATOM: WHICH OF THE FOLLOWING TRANSITIONS ARE ALLOWED IN THE NORMAL ELECTRONIC EMISSION SPECTRUM OF AN ATOM: * 5d →2s * 5p →3s * 6p →4f * 2s ... Read more

2019-11-22 09:42:01 | 125 | Physical Chemistry 3
orbital
* AN ORBITAL CAN HAVE MAXIMUM OF …………. ELECTRONS? * 2 b) 6 c) 10 d) 12 Read more

2019-11-22 09:18:19 | 109 | Physical Chemistry 3
quantum numbe
* WITH INCREASING QUANTUM NUMBER, N, THE ENERGY DIFFERENCE BETWEEN ADJACENT ENERGY LEVELS IN H ATOM………….. * decreases b) increases c) remains constant d) equals ∞ Read more

2019-11-22 09:11:54 | 50 | Physical Chemistry 3
radial wavefunctions
* THE SOLUTION OF THE RADIAL WAVEFUNCTIONS EQUATION WITH POSITIVE ENERGIES REFERS TO: * The unbound states of the electron. * The state in which the electron is ejected from the atom. * A higher energy state of the electron. * All of the above. Read more