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 |
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- |
What is the correct structure of the chlorite ion, ClO2- ?
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
Which of the following structures do not obey the octet rule?
I and II only
I and III only
II and III only
I, II and III
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
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
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
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?
In which series of compounds does covalent character increase when going from left to right?
KI, KBr, KCl
NaI, KI, RbI
NaCl, MgCl2, AlCl3
SO2, P4O10, SiO2
