Top Posters
Since Sunday
Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
New Topic  
Znick Znick
wrote...
Go to Answer
Posts: 109
Rep: 1 0
2 years ago
An atom that has an atomic number of 20 and a mass number of 42 is an isotope of an atom that has:

▸ an atomic number of 21 and a mass number of 42

▸ an atomic number of 20 and a mass number of 40

▸ 22 neutrons and 20 protons

▸ 22 protons and 20 neutrons
Textbook 
General Chemistry: Principles and Modern Applications

General Chemistry: Principles and Modern Applications


Edition: 11th
Authors:
Read 56 times
1 Reply
Replies
Answer verified by a subject expert
majed320majed320
wrote...
#1
Posts: 62
Rep: 0 0
2 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

Znick Author
wrote...

2 years ago
Thank you, thank you, thank you!
SlimyPencil
wrote...

Yesterday
Brilliant ツ
carston
wrote...

2 hours ago
Just got PERFECT on my quiz
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1299 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 184
  
 75
  
 331