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Atomic Structure
Which of the following characteristic does not possesses by metal?
luminus
ductility
increase in conductance by increase in temperature
malleability
Author:
rikazzz
Comment
Atomic Structure
Compared with the neutral atoms involved in the formation of an ionic compound, the crystal lattice that results is
Higher in potential energy.
Lower in potential energy.
Equal in potential energy.
Unstable.
Author:
rikazzz
Comment
Atomic Structure
Three isotopes of an element have mass numbers M, (M + 1) and (M + 2). If the mean mass number is (M + 0.5) than which of the following ratio may be accepted for M , (M + 1) , (M + 2) in that order.
1 : 1 : 1
4 : 1 : 1
3 : 2 : 1
2 : 1 : 1
Author:
rikazzz
Comment
Atomic Structure
The total number of protons and neutrons in the nucleus of an atom is its
atomic number.
Avogadro constant.
mass number.
number of neutrons.
Author:
rikazzz
Comment
Atomic Structure
An atom is electrically neutral because
neutrons balance the protons and electrons.
nuclear forces stabilize the charges.
the numbers of protons and electrons are equal.
the numbers of protons and neutrons are equal.
Author:
rikazzz
Comment
Atomic Structure
The attractive force that holds atoms together in a molecule is called
force of attraction
electrostatic force
bond
chemical bond
Author:
rikazzz
Comment
Atomic Structure
The forces of attraction between molecules in a molecular compound are generally
Stronger than the attractive forces among formula units in ionic bonding.
Weaker than the attractive forces among formula units in ionic bonding.
Approximately equal to the attractive forces among formula units in ionic bonding.
Equal to zero.
Author:
rikazzz
Comment
Atomic Structure
The polarity of a molecule is expressed by
bond strength
dipole moment
bond length
shape
Author:
rikazzz
Comment
Atomic Structure
Bond strength increases with
Bond length increasing
Anti bonding electrons being higher in number
Bond order increasing
Bond angle increasing
Author:
rikazzz
Comment
Atomic Structure
In a crystal of an ionic compound, each cation is surrounded by a number of
Molecules.
Positive ions.
Dipoles.
Negative ions.
Author:
rikazzz
Comment
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