Atoms have equal numbers of these subatomic particles.
What are protons and electrons?
200
This is the location for the neutrons.
What is nucleus?
200
This is how many valence electrons chlorine has.
What is 7 ?
300
This is the mass in A.M.U.'s of a proton.
What is 1 A.M.U. ?
300
This is the mass in A.M.U.'s of an electron.
What is 0 A.M.U.'s ?
300
An atom of argon has this many electrons.
What is 18?
300
This is the mass of the neutron in A.M.U.'s.
What is 1 A.M.U. ?
300
There are this many valence electrons in most (not helium) of the noble gases.
What is 8?
400
This is the atomic number for mercury.
What is 80 ?
400
This is the number of electrons in an atom of calcium.
What is 20?
400
Ernest Rutherford found that atoms are made mostly of this.
What is empty space?
400
Atoms of the same element that have different number of neutrons are called this.
What are isotopes?
400
Draw a Lewis dot structure for sodium.
What is Na.
500
This is the atomic number of the largest element in the Alkali Metals.
What is 87 ?
500
This is the number of electrons in the S-2 ion.
What is 18?
500
There are this many electron shells in a potassium atom.
What is 4?
500
If an atom has an average atomic mass of 36 A.M.U.'s, and the only two isotopes have weights of 35 A.M.U.'s and 37 A.M.U.'s, what are the percent abundances of each?