Atoms Molecules and Ions
An atom’s model that the atom is composed of electrons surrounded by a group of positive charge to balance the electrons’ negative charges is called
Thomson’s Model
Rutherford’s Model
Dalton’s Model
Bohr’s Model
Thomson’s Model
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The smallest particle of an atom which exists, is calledA. matter
B. atom
C. proton
D. electron
The diameter of a ‘nucleus’ is
A. 0.00001nm
B. 1nm
C. 0.1nm
D. 0.01nm
A silver pendant is made up of atoms of
A. silver
B. gold
C. platinum
D. metals
Neutrons carry
A. positive charge
B. negative charge
C. neutral charge
D. no charge
A modern model of an atom shows that electrons are present outside nucleus in the region of high
A. probability
B. velocity
C. speed
D. energy level
Rutherford’s Model explains that atom has a nucleus which is surrounded by
A. protons
B. electrons
C. neutrons
D. nuclear energy
In nucleus, mass of an atom is more than
A. 0.9994
B. 0.9499
C. 0.9949
D. 0.4999
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