1. Chemistry for Engineers Pop-up Quiz Name____________________
***********************************************************************
Chemistry for Engineers Pop-up Quiz Name____________________
Course: NANO / AERO / ADME ID_______________________
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Q1: a) Write the electron configurations of the
following species e.g. Si is [Ne]3s23p2
i) B [__]____________
ii) Ti2+ [__]____________
iii) Re3+[__]____________
Q2: Complete the particle numbers table:
neutrons electrons
a) 15N3-
b) 90Sr2+
c) 228Th3+ 8 10
He 2s22p1 52 36
Ar 3d2
138 87
Xe 4f145d4
(3 marks)
(6 marks)
Q3: Using the Rydberg equation:
DE/h = c/l = n = R[(1/nL2 ) – (1/nU2 )]
Suppose an electron is moved from the n = 2 to n = 6 quantum level
of the hydrogen atom.
a) Is radiation absorbed or emitted during the energy change? ___________
b) Calculate the wavelength (nm) of the radiation (show working) .
Q4:a) How many valence electrons are there in BrF3? ___
b) Draw the Lewis structure:
c) Using VSEPR, what is the electron pair arrangement around central atom? (circle):
trigonal bipyramid / tetrahedral / linear / octahedral / trigonal
d) What is the molecule shape? ____________________________
R = 3.29 x 1015 Hz,
h = 6.63 x Js
c = 3 x 108 m/s,
1Da = 1 a.m.u. = 1.66 x g
NA = x 1023
absorbed
( marks)
410 nm 28
T-shaped
( marks)
Q5: a) A metal has face-centre cubic unit cells of edge length 362 pm. Given that the bulk metal has a density of g/cm3, calculate the molar mass of the metal in order
to identify it (show calculation):
atomic mass_________ g/mol
metal _________
(4 marks)
63.5
(1 marks)
Total: 30 marks Cu

2. Chemistry for Engineers Pop-up Quiz Name____________________
***********************************************************************
Chemistry for Engineers Pop-up Quiz Name____________________
Course: NANO / AERO / ADME ID_______________________
*************************************************************************
Q1: a) Write the electron configurations of the
following species e.g. Si is [Ne]3s23p2
i) N [__]____________
ii) V2+ [__]____________
iii) Hg2+ [__]____________
Q2: Complete the particle numbers table:
neutrons electrons
a) 18O2-
b) 99Tc2+
c) 232Pa2+ 10 10 56 41
He 2s22p3
Ar 3d3
141 89
Xe 4f145d10
(3 marks)
(6 marks)
Q3: Using the Rydberg equation:
DE/h = c/l = n = R[(1/nL2 ) – (1/nU2 )]
Suppose an electron is moved from the n = 3 to n = 4 quantum level
of the hydrogen atom.
a) Is radiation absorbed or emitted during the energy change? ___________
b) Calculate the wavelength (nm) of the radiation (show working) .
Q4:a) How many valence electrons are there in SCl5+? ___
b) Draw the Lewis structure:
c) Using VSEPR, what is the electron pair arrangement around central atom? (circle):
trigonal bipyramid / tetrahedral / linear / octahedral / trigonal
d) What is the ion shape? ____________________________
R = 3.29 x 1015 Hz,
h = 6.63 x Js
c = 3 x 108 m/s,
1Da = 1 a.m.u. = 1.66 x g
NA = x 1023
absorbed
1876 nm
( marks) 40
distorted pyramid
( marks)
Q5: A metal has face-centre cubic unit cells of edge length nm. Given that the bulk metal has a density of g/cm3, calculate the atomic mass of the metal in order to identify it (show calculation)
atomic mass_________ (g/mol)
metal _______
107.8
(4 marks) Ag
(1 marks)
Total: 30 marks

3. Chemistry for Engineers Pop-up Quiz Name____________________
***********************************************************************
Chemistry for Engineers Pop-up Quiz Name____________________
Course: NANO / AERO / ADME ID_______________________
*************************************************************************
Q1: a) Write the electron configurations of the
following species e.g. Si is [Ne]3s23p2
i) Mg [__]____________
ii) Cr3+ [__]____________
iii) Pt2+ [__]____________
Q2: Complete the particle numbers table:
neutrons electrons
a) 29Si
b) 107Pd2+
c) 239U3+ 15 14 61 44
Ne 3s2
Ar 3d3
147 89
Xe 4f145d8
(3 marks)
(6 marks)
Q3: Using the Rydberg equation:
DE/h = c/l = n = R[(1/nL2 ) – (1/nU2 )]
Suppose an electron is moved from the n = 5 to n = 3 quantum level
of the hydrogen atom.
a) Is radiation absorbed or emitted during the energy change? ___________
b) Calculate the wavelength (nm) of the radiation (show working) .
Q4:a) How many valence electrons are there in RnF2? ___
b) Draw the Lewis structure:
c) Using VSEPR, what is the electron pair arrangement around central atom? (circle):
trigonal bipyramid / tetrahedral / linear / octahedral / trigonal
d) What is the molecule shape? ____________________________
R = 3.29 x 1015 Hz,
h = 6.63 x Js
c = 3 x 108 m/s,
1Da = 1 a.m.u. = 1.66 x g
NA = x 1023
emitted
1282 nm
( marks) 22
linear
( marks)
Q5: a) A metal is found to crystallise in body-centre cubic unit cells of edge length 647 pm. Given that the bulk metal has a density of 1.63 g/cm3, calculate the atomic mass of the metal in order to identify it (show calculation):
atomic mass_____________ g/mol
metal:_______
132.9
(4 marks) Cs
(1 marks)
Total: 30 marks

4. Chemistry for Engineers Pop-up Quiz Name____________________
***********************************************************************
Chemistry for Engineers Pop-up Quiz Name____________________
Course: NANO / AERO / ADME ID_______________________
*************************************************************************
Q1: a) Write the electron configurations of the
following species e.g. Si is [Ne]3s23p2
i) P [__]____________
ii) Mn2+ [__]____________
iii) W4+ [__]____________
Q2: Complete the particle numbers table:
neutrons electrons
a) 37Cl-
b) 115In3+
c) 241Np3+ 15 14 61 44
Ne 3s23p3
Ar 3d5
148 93
Xe 4f145d2
(3 marks)
(6 marks)
Q3: Using the Rydberg equation:
DE/h = c/l = n = R[(1/nL2 ) – (1/nU2 )]
Suppose an electron is moved from the n = 7 to n = 2 quantum level
of the hydrogen atom.
a) Is radiation absorbed or emitted during the energy change? ___________
b) Calculate the wavelength (nm) of the radiation (show working) .
Q4:a) How many valence electrons are there in CCl3+? ___
b) Draw the Lewis structure:
c) Using VSEPR, what is the electron pair arrangement around central atom? (circle):
trigonal bipyramid / tetrahedral / linear / octahedral / trigonal
d) What is the molecule shape? ____________________________
R = 3.29 x 1015 Hz,
h = 6.63 x Js
c = 3 x 108 m/s,
1Da = 1 a.m.u. = 1.66 x g
NA = x 1023
emitted
397 nm
( marks) 24
trigonal
( marks)
Q5: a) A metal is found to crystallise in body-centre cubic unit cells of edge length 508 pm nm. Given that the bulk metal has a density of 0.99 g/cm3, calculate the atomic mass of the metal in order to identify it (show calculation):
atomic mass_____________ g/mol
metal:_______
39.1
(4 marks) K
(1 marks)
Total: 30 marks