Register
In an alternate dimension, Promethium (Pm; Z = 61) is stable. It has 3 stable isotopes 145pm (144.96 amu; 68.47%), 146Pm (145.98 amu; 21.39%), and 147Pm (146.99 amu; 10.14%). What is the average atomic
270,145 views
45 votes
45 votes
In an alternate dimension, Promethium (Pm; Z = 61) is stable. It has 3 stable isotopes

145pm (144.96 amu; 68.47%), 146Pm (145.98 amu; 21.39%), and 147Pm (146.99
amu; 10.14%). What is the average atomic mass of Promethium in this alternate
universe?

User Deonclem
by
2.7k points

1 Answer

20 votes
20 votes
Answer do not know


Explanation multiple
User Andoni
by
2.7k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

1.6m questions

2.0m answers

Other Questions

Bison wear clothes true or false (not the clothes we wear.)
Please help sorry if it’s a little hard to read
What does it mean if your hypothesis is wrong? What do you do?
What is the molar mass of. 3 moles of iodine, 5 moles of gold, and 2.5 moles of potassium
Give one example of neutral oxides which turns colourless liquid at room temperature
Link Copied!