Question

isotope notation
learning intention: we will understand how to represent isotopes using isotope notation.
isotope notation is a way of representing isotopes in a concise and
__________ manner. in isotope notation, the symbol of the element is
proceeded by the mass number, which represents the total number of
protons and __________ in the nucleus, and the atomic number, which
represents the number of __________. the mass number is typically written
as a superscript (at the __________) to the left of the element symbol, and the
atomic number is written as a subscript (at the __________) to the left of
the element symbol.
for example, carbon 12 and carbon 13:
record the isotope notation for the following isotopes:

1. calcium - 40
2. calcium - 42
3. calcium - 43
4. calcium - 44
5. calcium - 46
6. calcium - 48
7. iron - 54
8. iron - 56
9. iron - 57
10. iron - 58
11. oxygen - 16
12. oxygen - 17
13. oxygen - 18

Explanation:

Step1: Recall isotope notation rules

Isotope notation has mass - number as superscript and atomic number as subscript to left of element symbol. Mass number is sum of protons and neutrons, atomic number is number of protons. Atomic number of Ca is 20, Fe is 26, O is 8.

Step2: Write isotope notations for remaining isotopes

1. $\ce{^{57}_{26}Fe}$
2. $\ce{^{58}_{26}Fe}$
3. $\ce{^{16}_{8}O}$
4. $\ce{^{17}_{8}O}$
5. $\ce{^{18}_{8}O}$

Answer:

1. $\ce{^{57}_{26}Fe}$
2. $\ce{^{58}_{26}Fe}$
3. $\ce{^{16}_{8}O}$
4. $\ce{^{17}_{8}O}$
5. $\ce{^{18}_{8}O}$