Q1: a Write the electron configurations of the

1

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 Ne3s23p2 i)
B ______________ ii) Ti2 ______________ iii
) Re3______________
Q2 Complete the particle numbers
table neutrons electrons a) 15N3- b)
90Sr2 c) 228Th3
8
10
36
52
He 2s22p1
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) . Q4a) 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 10-34 Js c 3 x
108 m/s, 1Da 1 a.m.u. 1.66 x 10-24 g NA
6.022 x 1023
absorbed
(2 4 marks)
410 nm
28
T-shaped
(2 3 2 3 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 8.895 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____________________ Course
NANO / AERO / ADME ID_______________________


Q1 a) Write the electron configurations of
the following species e.g. Si is Ne3s23p2 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) . Q4a) 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 10-34 Js c 3 x
108 m/s, 1Da 1 a.m.u. 1.66 x 10-24 g NA
6.022 x 1023
absorbed
(2 4 marks)
1876 nm
40
distorted pyramid
(2 3 2 3 marks)
Q5 A metal has face-centre cubic unit cells of
edge length 0.409 nm. Given that the bulk metal
has a density of 10.46 g/cm3, calculate the
atomic mass of the metal in order to identify it
(show calculation) atomic mass_________
(g/mol) metal _______
(4 marks)
107.8
Ag
(1 marks) Total 30 marks
3

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 Ne3s23p2 i)
Mg ______________ ii) Cr3 ______________ ii
i) Pt2 ______________
Q2 Complete the particle numbers
table neutrons electrons a) 29Si b)
107Pd2 c) 239U3
15
14
44
61
Ne 3s2
147
89
Ar 3d3
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) . Q4a) 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 10-34 Js c 3 x
108 m/s, 1Da 1 a.m.u. 1.66 x 10-24 g NA
6.022 x 1023
emitted
1282 nm
(2 4 marks)
22
linear
(2 3 2 3 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_______
(4 marks)
132.9
Cs
(1 marks) Total 30 marks
4

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 Ne3s23p2 i)
P ______________ ii) Mn2 ______________ iii
) W4 ______________
Q2 Complete the particle numbers
table neutrons electrons a) 37Cl- b)
115In3 c) 241Np3
15
14
44
61
Ne 3s23p3
148
93
Ar 3d5
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) . Q4a) 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 10-34 Js c 3 x
108 m/s, 1Da 1 a.m.u. 1.66 x 10-24 g NA
6.022 x 1023
emitted
397 nm
(2 4 marks)
24
trigonal
(2 3 2 3 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_______
(4 marks)
39.1
K
(1 marks) Total 30 marks