[tex] ^7 _3 {Li} [/tex] means that the element is Lithium (Li), 7 corresponds to its mass number (sum of protons and neutrons), 3 corresponds to its atomic number (number of protons in the nucleus).
The problem asks for the atomic number (Z) of this isotope: based on what we said previously, the answer is 3.
Answers ( 2 )
I think thats a trick question on the periodic table there is no Z, theres Zi which is zinc but no Z
[tex] ^7 _3 {Li} [/tex] means that the element is Lithium (Li), 7 corresponds to its mass number (sum of protons and neutrons), 3 corresponds to its atomic number (number of protons in the nucleus).
The problem asks for the atomic number (Z) of this isotope: based on what we said previously, the answer is 3.