Atomic Theory: Question Preview (ID: 9884)


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What is a specific amount of energy absorbed by an electron?
a) photon b) ion c) nucleon d) quantum
In the plum pudding model, the pudding represents ___ and the raisins represent ___.
a) the neutral area of the atom; the electrons b) the electrons; the positive protons c) the positively charged area of the atom; the electrons d) the protons of the atom; the neutrons
What subatomic particle has a neutral charge?
a) nuetron b) positron c) electron d) proton
In which pair do the particles have approximately the same mass?
a) proton and electron b) neutron and an alpha particle c) proton and neutron d) neutron and electron
The atomic mass of an element is the weighted average of the
a) number of protons in the isotopes of that element b) atomic masses of the naturally occurring isotopes of that element c) atomic number of the naturally occurring isotopes of that element d) number of neutrons in the isotopes of that element
Which statement best describes the nucleus of an aluminum atom?
a) It has a charge of +13 and is surrounded by 10 electrons. b) It has a charge of –13 and is surrounded by 10 electrons. c) It has a charge of –13 and is surrounded by 13 electrons. d) It has a charge of +13 and is surrounded by 13 electrons.
Which symbol represents a particle with a total of 10 electrons?
a) N b) Al+3 c) Al d) N+3
An element with a charge is an
a) atom b) acid c) electron d) ion
An element with a negative charge (ex. S-2) indicates there was ain this atom is
a) gain of two electrons b) loss of two protons c) loss of two electrons d) gain of two nuetrons
Which electron configuration is correct for F-?
a) 2-7 b) 2-8 c) 2-8-1 d) 2-8-2
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