Search for notes by fellow students, in your own course and all over the country.
Browse our notes for titles which look like what you need, you can preview any of the notes via a sample of the contents. After you're happy these are the notes you're after simply pop them into your shopping cart.
Document Preview
Extracts from the notes are below, to see the PDF you'll receive please use the links above
MACHAKOS UNIVERSITY COLLEGE
(A Constituent College of Kenyatta University)
University Examinations for 2015/2016 Academic Year
SCHOOL OF PURE AND APPLIED SCIENCES
DEPARTMENT OF PHYSICAL SCIENCES
FIRST SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR OF
EDUCATION (SCIENCE)
SCH 100: FUNDAMENTALS OF INORGANIC CHEMISTRY
DATE: SCHOOLBASED
TIME:
_________________________________________________________________________________________________
INSTRUCTIONS:
•
The paper consists of two sections
...
Answer any two questions from section B
...
REQUIRED DATA/INFORMATION
• Mass of electron (m) = 9
...
602x10-19 C
•
Rydberg’s constant (R) = 10 973 731
...
63x10-34Js,
Speed of light in a vacuum (C) = 2
...
854188x10-12C2s2Kg-1m-3
•
Z- nuclear charge, Smallest Bohr atomic radius (r1) = 5
...
6022 x 10-19 J; 1 mile = 1609 m
...
Please Turn Over
...
J
...
Rutherford’s atomic structure model
(5 marks)
A beryllium atom has 4 protons, 5 neutrons and 4 electrons
...
(4 marks)
d)
Explain the two factors affecting maximum kinetic energy of photoelectrons
...
(4 marks)
g)
List all the allowed combinations of the four quantum numbers (n, l, ml, ms) for a
6d orbital, and predict the total number of electrons it can contain
...
Paschen series
(2 marks)
ii
...
097x107m-1
c)
Explain why elements produce their own characteristic colors when they emit photons
(4 marks)
(2 marks)
d)
An electron falls from energy level 6 to 3 in a hydrogen emission spectrum;
i
...
Calculate its corresponding wavelength and frequency
...
4 nm
...
Acid dissociation constant,
(2 marks)
ii
...
(2 marks)
c)
A solution of 0
...
035 M NaOH is prepared
...
34 g/mole) is required to prepare 150 mL of a solution with a
pH of 13
...
52
...
25 M solution of
HOCl? What is the percent ionization?
f)
(4 marks)
Arrange the following acids in order of increasing acid strength
...
(2 marks)
QUESTION FOUR
a)
In Quantum mechanics, quantum numbers are needed to characterize completely each
b)
c)
electron in an atom
...
(6 marks)
Write the quantum numbers that represent the following electrons:
(2 marks)
i
...
4f6
Which of the following are allowable sets of quantum numbers for an orbital? Explain
...
n = 4, l = 4, ml = 0
ii
...
n = 5, l = 3, ml = -4
Examination Irregularity is punishable by expulsion
Page 3 of 5
d)
Two of the three electrons in a lithium atom have quantum numbers of n=1, l=0, ml=0,
ms=-1/2
...
Its ground state
(2 marks)
ii
...
3pz
(1 mark)
ii
...
Write the complete electron configuration for element 114
...
Explain your answer
...
Explain your answer
...
Given
that the number of neutrons and mass number of Pd is 60 and 106 respectively
...
i)
Elements Y (not its actual symbol) has atomic number 83
...
ii)
(3 marks)
Draw and label energy level diagram for Hydrogen atom and a multi-electron
atom like copper