WorksheetsAEC3302-Q2 (17/12/2024)
Total questions: 15
Worksheet time: 22mins
Define the Lewis concept of acids and bases
acids produce H+ ion and bases produce OH- ion
acids are proton donors and bases are proton acceptors
acids are electron pair acceptors and bases are electron pair donor
acids are electron pair donor and bases are electron pair acceptors
Select the correct formula of hydronium ion and the hydroxide ion
H3O+, OH+
OH-, H3O-
OH-, H+
H3O+, OH-
Arrange the acids HOCl, HClO3, and HClO2 in order of increasing acid strength
HOCl < HClO2 < HClO3
HOCl < HClO3 < HClO2
HClO2 < HOCl < HClO3
HClO3 < HOCl < HClO
Refer to the following balanced redox equation, identify which species is reducing agent.
MnO2
Mn
Cl-
Cl2
Determine the oxidizing agent in the following redox equation .
NO3-
H2S
NO2
H2O
Identify the oxidation number (O.N.) of N in the KNO3.
+6
+5
+3
+1
Hard acids tend to bind to hard bases and produce
Acidic
Basic
high ionic character
high covalent character
The electron configuration of a Cr3+ ion is
[Ar]3d5
[Ar]3d3
[Ar]4s13d5
[Ar]4s13d2
The total number of electrons in the 3d orbitals of a copper atom is
7
8
9
10
Which of the following pairs of elements belong to the same period?
Na and Cl
Na and Li
Na and Cu
Na and Ne
The largest atomic radius for a neutral element is expected for which of the following electron configurations?
[He] 2s2 2p3
[He] 2s2 2p5
[Ne] 3s2 3p5
[Ne] 3s2 3p3
Rank the following elements in order of increasing atomic radius: Na, B, F, Br
Br < Na < B < F
F < B < Br < Na
B < F < Na < Br
F < B < Na < Br
The minimum energy required to remove an electron from a gaseous atom in its ground state is
isoelectronic
ionic radius
ionization energy
electron affinity
Calculate the effective nuclear charge (Zeff) experienced by the 2s electrons of the sulfur atom .
4.15
11.85
13.95
14.00
By using Slater’s rule, determine Z* for 3d electrons in Iron.
19.75
18.55
7.45
6.25
