Atoms Molecules and Ions

Atoms Molecules and Ions
The number of protons and electrons in an atom is
different
same
average
constant
Author: rikazzz Comment
Atoms Molecules and Ions
Electrons orbiting around nucleus bear
positive charge
negative charge
no charge
neutral charge
Author: rikazzz Comment
Atoms Molecules and Ions
The size of a single atom is
1nm
0.1nm
0.11nm
1.0nm
Author: rikazzz Comment
Atoms Molecules and Ions
As compare to hydrogen atom, helium atom is
very small
very massive
medium in mass fraction
same in volume
Author: rikazzz Comment
Atoms Molecules and Ions
Under STM, atoms can be
observed
manipulate
transferred
both a and b
Author: rikazzz Comment
Atoms Molecules and Ions
Chemical symbol represents
chemical formula
molecular formula
structural formula
atomic formula
Author: rikazzz Comment
Atoms Molecules and Ions
Molecules which consists of fixed number of different types of atoms which are chemically combined together, are
elements
compounds
mixtures
liquids
Author: rikazzz Comment
Atoms Molecules and Ions
Chloride ion has number of protons
17
18
24
34
Author: rikazzz Comment
Atoms Molecules and Ions
Two or more atoms chemically combined together form a
atom
molecule
nucleus
atomic number
Author: rikazzz Comment
Atoms Molecules and Ions
“O3” is a chemical formula of
oxygen
oxides
ozone
acid rain
Author: rikazzz Comment

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