Download U2-LM2B-WS – FUNDAMENTAL PARTICLES OF ATOM 1. The

U2-LM2B-WS – FUNDAMENTAL PARTICLES OF ATOM
1.
The smallest particle of an element is an __________________.
electron
2.
The three fundamental subatomic particles are: ___________,
the ______________and
electron
proton
the _____________.
The
two
particles
that
have
equal
but
opposite
charge
are_______and
neutron
proton
the _____________.
The
particles
that
reside
in
the
nucleus
are
called
nucleons
and consist
electron
of the ___________
and the ____________.
Each of these nuclear particles has a mass of
proton
neutron
about ______
amu. A nucleon is about 2000 times heavier than an electron and therefore,
1
the mass of the electron is negligible and the mass of an atom resides in its ____________.
nucleus
3. The number of protons in the nucleus is referred to as the ______________.
atomic number
4. The total number of particles in the nucleus is referred to as ___________________.
atomic mass
5. An atom of indium, In, with a mass number of 113 has ____protons,
____
49
49 electrons and
_____
64 neutrons.
6. An atom of iron, Fe, with a mass number of 56 has has _____protons,
____electrons
and
26
26
_____
30 neutrons.
7. The mass number is symbolized with the letter: ______
while the atomic number is ____.
A
Z
8. What are the name and the symbol of the element which has 33 protons, 42 neutrons and
33 electrons? ______________________
Arsenic-75, As-75
9. What are the name and the symbol of the element which has 80 protons, 80 electrons and
120 neutrons? ______________________
Mercury-200, Hg-200
10. Which is the element that has 24 protons? ____
No
Cr Can you provide the nuclide symbol?___
11. Provide the nuclide symbol for the neutral atom having 29 electrons and 34 neutrons.
63
Cu
29
12. If the mass of each nucleon is approximately 1 amu and the mass of an electron is
negligible, then the mass of an atom of nickel-58 is approximately ________
amu and the
58
mass of a rubidium-87 atom is approximately ___________amu.
87