SCI 155 Chap 8a: Question Preview (ID: 9095)


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The atomic number always tells you the number of
a) protons b) neutrons c) electrons d) protons + neutrons
The mass number always tells you the number of
a) protons b) neutrons c) electrons d) protons + neutrons
Isotopes have the same number of *, but different numbers of *.
a) neutrons, protons b) protons, neutrons c) protons, electrons d) electrons, protons
In 113Cd2+, the mass number is
a) +2 b) 48 c) 113 d) 65
In 113Cd2+, the atomic number is
a) +2 b) 48 c) 113 d) 65
How many neutrons are in 106Pd+1?
a) 106 b) 60 c) 46 d) 45
How many electrons are in 75As3-?
a) 75 b) 33 c) 30 d) 36
How many protons are in 24Mg+2?
a) 24 b) 26 c) 12 d) 10
When atoms gain electrons they are called * and are * charged.
a) cations, negatively b) cations, positively c) anions, negatively d) anions, positively
Metals * electrons and nonmetals * electrons.
a) lose, lose b) gain, lose c) gain, gain d) lose, gain
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