In this section you will find thousands of questions of Chemistry, how to solve each of the questions and the correct answer.
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Which of the following molecules is held together by hydrogen bond?
CH4
HBr
H2SO4
HF
The shape of the carbon(IV) oxide (CO2) molecule is
Pyramidal
Linear
Angular
Tetrahedral
The radioactive emission with the least ionization power is
α-particles
X-rays
γ-rays
β-particles
How many unpaired electrons are in the p-orbitals of a fluorine atom?
3
0
1
2
The radioisotope used in industrial radiography for the rapid checking of faults in welds and casting is
Carbon-14
Phosphorus-32
Cobalt-60
Iodine-131
