Question

1. test your understanding of isotopes by examining the following:

atom 1	atom 2	relationship between atom 1 and atom 2
carbon - 12	$_{6}^{12}c$	$square$ isotopes<br>$square$ same atom, not isotopes of each other<br>$square$ different element
argon - 40	argon - 41	$square$ isotopes<br>$square$ same atom, not isotopes of each other<br>$square$ different element
$_{5}^{11}b$	boron - 10	$square$ isotopes<br>$square$ same atom, not isotopes of each other<br>$square$ different element
an atom with 13 protons and 13 neutrons	an atom with 14 protons and 13 neutrons	$square$ isotopes<br>$square$ same atom, not isotopes of each other<br>$square$ different element

Explanation:

Isotopes are atoms of the same element with different numbers of neutrons. For the first pair, $^{12}_{6}C$ and $^{13}_{6}C$ are isotopes as they are both carbon with different mass - numbers. For the second pair, carbon - 12 and $^{12}_{6}C$ are the same atom. For the third pair, argon - 40 and argon - 41 are isotopes as they are both argon with different neutron counts. For the fourth pair, $^{11}_{5}B$ and boron - 10 are isotopes. For the fifth pair, an atom with 13 protons is aluminum and an atom with 14 protons is silicon, so they are different elements.

Answer:

1. Isotopes
2. Same Atom, Not Isotopes of Each Other
3. Isotopes
4. Isotopes
5. Different Element