EEE-1201.docx - Khwaja Yunus Ali University School of...

Khwaja Yunus Ali University
School of Science & Engineering
Department of Electrical and Electronic Engineering
Mid-term Examination: Fall Semester-2019
Program: B.Sc. in EEE (Batch: 8
th
), 1
st
Year 2
nd
Semester
Course Title: Chemistry
Course Code: CHEM 1201
Time: 1 hour & 20 minutes Mark: 20
[Answer question no. 1 (one) & any four (4) from the rest of the followings.]
1.
a) Calculate the wave length of ‘x’ radiation according to figure-I. 2
b) In between (I) & (II) which one is more suitable and why? Analyze.
2. a) What are the limitations of Aufbau principle? Give example. 2
b) Calculate the total energy of an electron revolving in ‘ n th ’ orbit of hydrogen like
atom.
3
3. a) What is the difference between an orbit and orbital? 2
b) Using VSEPR theory, give the geometry & shapes of H
2
O and NH
3
. 3
4. a) Write down the conditions for favoring ionic compounds. 2
b) What is molecular orbital theory? Draw molecular orbital energy level diagrams
for N
2
and O
2
.
3
3