Worksheetsmodern atomic theory
Total questions: 11
Worksheet time: 8mins
what are energy levels ?
possible energies that electrons in an atom can have
a visual model of the most likely locations for electrons in an atom
a region of space around the nucleus where an electron is most likely to be found
the arrangement of electrons in the orbital of an atom
what was bohr's experiment
billiard ball
the glowing beam
flame test
every atom of a given element has the same number of
(a)
number of neutrons =
(a)
all oxygen atoms have 8 protrons. what is the number of neutrons in an atom of oxygen-18
8
9
10
18
every atom of given element does not have the same number of
(a)
in bohr's model of the atom, electrons have a constant speed and move in fixed orbits around the nucleus
true
false
higher levels have (a) orbitals than lower energy levels do
what are the energy levels needed for a lithium atom's three electrons when the atom is in its ground state
zero
one
two
three
what sentence is true when all the electrons in one atom are in orbitals with the lowest possible energies
the electrons are in the most stable configuration
the electrons are in an unstable configuration
the atom is in an excited state
the atom is in its ground state
an orbital is a region of space around the nucleus where an electron is likely to be found
true
false
