CHEM104 / CHEM 104 Module 6: (Latest Update 2026 / 2027) General Chemistry II with Lab | Questions & Answers | Grade A | 100% Correct - Portage Learning

CHEM104 / CHEM 104 Module 6:
(Latest Update ) General
Chemistry II with Lab | Questions &
Answers | Grade A | 100% Correct -
Portage Learning

Descriptive Nuclear Chemistry




Question:
Write isotopes using format z^A X


What does each variable stand for?
Answer:
Z: protons (atomic number)
A: neutrons and protons (mass number)
X: atomic symbol

,Question:
Write notation of the isotope Neon-20
Answer:
10^20 Ne (has 10 neutrons)




Question:
Alpha particle symbol
Answer:
2^4He or 2^4a




Question:
Beta particle symbol
Answer:
-1^0e or -1^0β




Question:
Positron symbol
Answer:
1^0e or 1^0β

,Question:
Proton
Answer:
1^1H or 1^1p




Question:
Neutron
Answer:
0^1n




Question:
Gamma ray
Answer:
y




Question:
What type of nuclear decay equation is Rb = Sr + -1^0e
Answer:
Beta decay

, Question:
Define half life (t 1/2) of a radioisotope
Answer:
The time required for half of the atoms in a sample to decay




Question:
Why is knowing that half life important when working with radioactive
materials in medicine?
Answer:
It is necessary to know how long a dangerous isotope must be properly stored
to prevent radiation exposure in the environment




Question:
Transmutation
Answer:
The conversion of one nuclide into another