Atomic Structure Question Preview (ID: 52890)


This Set Covers Atomic Structure And Includes Counting Electrons Protons, Isotopes, And Ions. TEACHERS: click here for quick copy question ID numbers.

Which atom contains exactly 15 protons?
a) phosphorus-32
b) sulfur-32
c) oxygen-15
d) nitrogen-15

Almost the entire mass of an atom is concentrated in the _____.
a) protons
b) electrons
c) nucleus
d) neutrons

Which symbols represent atoms that are isotopes?
a) C-14 and N-14
b) O-16 and O-18
c) I-131 and I-131
d) Rn-222 and Ra-222

How many electrons does a neutral atom of uranium have?
a) 92
b) 238
c) 146
d) 238.029

How many protons and electrons does an ion of Na+1?
a) 11 protons and 10 electrons
b) 11 protons and 12 electrons
c) 12 protons and 11 electrons
d) 10 protons and 11 electrons

How many protons and electrons does an ion of S-34?
a) 16 protons and 18 electrons
b) 16 protons and 14 electrons
c) 18 protons and 16 electrons
d) 14 protons and 16 electrons

How many electrons does a neutral atom of bromine have?
a) 35
b) 79.904
c) 80
d) 45

How many protons and electrons does an ion of Ca+2?
a) 20 protons and 22 electrons
b) 20 protons and 18 electrons
c) 18 protons and 20 electrons
d) 22 protons and 20 electrons

How many electrons does a neutral atom of potassium have?
a) 19
b) 39.098
c) 20
d) 39

The nucleus of an atom has all of the following characteristics EXCEPT that it
a) contains nearly all of the atoms volume
b) is positively charged
c) contains nearly all of the atoms mass
d) is very dense

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