CHCl3 and Br2 are both liquids at room temperature due to the existence of dipoles.
What dipoles are involved within CHCl3 and Br2?
CHCl3
Br2
A
induced dipoles only
induced dipoles only
B
induced dipoles only
induced dipoles and permanent dipoles
C
induced dipoles and permanent dipoles
induced dipoles and permanent dipoles
D
induced dipoles and permanent dipoles
induced dipoles only
Question 2
Marks: 1
What are the correct formulas for the following ions?
Phosphate
Ammonium
Ethanoate
Nitrite
A
PO43-
NH4+
CH3COO+
NO3-
B
PO32-
NH4-
CH3COO-
NO2-
C
PO43-
NH4+
CH3COO-
NO2-
D
PO42-
NH4+
CH3CH2COO-
NO3-
Question 3
Marks: 1
What is the correct structure of the chlorite ion, ClO2- ?
Question 4
Marks: 1
Which of the following statements about 2-chloropropene, CH2C(Cl)CH3 is not correct
There are 3 lone pairs in the molecule
There are 24 valence electrons in the molecule
The molecule does obey the octet rule
The molecule does not obey the octet rule
Question 5
Marks: 1
Which of the following structures do not obey the octet rule?
BeCl2
BF3
H2O
I and II only
I and III only
II and III only
I, II and III
Question 6
Marks: 1
The periodic table may be needed to answer this question.
Which is the shortest bond length in the following gases?
oxygen-oxygen in oxygen gas, O2
carbon-carbon in ethyne gas, C2H2
nitrogen-nitrogen in nitrogen gas, N2
oxygen-oxygen in ozone gas, O3
Question 7
Marks: 1
Which statement best describes the intramolecular bonding in a carbonate ion, CO32-?
Only London forces
Electrostatic attraction between pairs of electrons and positively charged nuclei
Permanent dipole permanent dipole forces
Electrostatic attraction between separate carbonate ions
Question 8
Marks: 1
The number of electrons in the valence shell of elements X and Y are 5 and 7 respectively. What is the formula and type of compound formed from these elements?
Covalent, XY3
Ionic, XY3
Covalent, X3Y
Ionic, X3Y
Question 9
Marks: 1
The nitrate(V) ion, NO3-, is a polyatomic ion, bonded by covalent bonds.
Which of the following shows the correct displayed formula for the nitrate ion?
Question 10
Marks: 1
In which series of compounds does covalent character increase when going from left to right?