Q.5
In which ways does atomic radius increase?
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Option 2It increases from bottom to top and left to right on the periodic table
It increases from top to bottom and left to right on the periodic table
It increases from top to bottom and right to left on the periodic table
It increases from bottom to top and right to left on the periodic table
Q.3
How many entities does one mole contain?
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602 000
602 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000
602 000 000 000
602 000 000 000 000 000 000 000
Q.7
What does it mean if a molecule is polar?
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The molecule is made up of a noble gas
The molecule is made up of a halogen
The molecule is asymmetrical
The molecule is symmetrical
Q.4
Which is the weakest intermolecular force?
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Dipole-dipole interactions
Hydrogen bonding
London dispersion forces
All are equal in strength
Q.1
What is a mass spectrometer?
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A device to break apart atoms in a molecule
A device to determine the approximate mass of each energy level of a single atom
A device to determine the exact mass of a sample of a substance
a measuring instrument used to determine abundance and mass of isotopes
Q.8
Which of the following molecules is polar?
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CCl4
CH4
H2O
CF4
Q.2
What is the periodic law?
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That when the elements are arranged in order of increasing atomic number there is periodic repetition
That when the elements are arranged in order of increasing atomic mass there is periodic repetition
That when the elements are arranged in order of decreasing atomic mass there is periodic repetition
That when the elements are arranged in order of increasing proton, neutron and electron numbers there is periodic repetition
Q.6
What is an example of nuclear radiation?
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Sodium Sulfate
An alpha particle
A delta particle
Magnesium Chloride