Question

1. what is the name of the subatomic particle that changes when we have an isotope?
2. how is the mass number of an isotope calculated?
3. name the isotope of an atom that has 6 protons and 8 neutrons. write you answer in any of the 3 ways to name an isotope.

9 - 13. fill in the following information for the isotope zr - 80 (in group 4).
element name mass number # of p+ # of n°

1. fluorine 10. 19.00 11. 9 12. 10

use the following table and reading to answer questions 14 - 17.
since neutrons carry no charge, they don’t need an electron nearby to balance them out. this renders their presence meaningless in most chemical processes. generally speaking, there’s little to no difference in how various isotopes of the same element behave. this is not true for hydrogen, however.
of hydrogen’s natural isotopes, h - 2 and have 1 and 2 neutrons respectively. in comparison, carbon has 2 stable isotopes: c - 12 - 13, with 6 and 7 neutrons respectively. in terms, there isn’t a huge difference in the neutrons’ share in their atom’s mass. one neutron will double the mass of a hydrogen atom — two effect — basically, heavier isotopes of the same element tend to be more sluggish than lighter isotopes.
isotopes of hydrogen percent abundance
¹h 99.98
²h 0.02
³h trace
is the mass of the most abundant hydrogen isotope?

Explanation:

Step1: Recall definition of isotopes

Isotopes of an element have the same number of protons but different numbers of neutrons. So the sub - atomic particle that changes is the neutron.

Step2: Recall mass number formula

The mass number (A) of an isotope is calculated as the sum of the number of protons (p) and neutrons (n), i.e., $A=p + n$.

Step3: Identify the element with 6 protons

An atom with 6 protons is carbon. With 8 neutrons, the mass number is $6 + 8=14$. The isotope can be named as carbon - 14 or $^{14}C$.

Step4: Analyze information for Zr - 80

For Zr (zirconium), from the periodic table, the element name is zirconium. The mass number given is 80. The atomic number of Zr is 40, so the number of protons (# of P+) is 40. The number of neutrons (# of N°) is $80 - 40=40$.

Answer:

1. Neutron
2. Mass number = number of protons+number of neutrons
3. Carbon - 14 or $^{14}C$
4. Zirconium
5. 80
6. 40
7. 40