The relative atomic mass of thallium is 204.3833
Is the water line of boat when someone boards or leaves it.
The name is Potassium bromide.
Answer:
Option D which is Sn4- is the answer
U-238
The number besides the U means its total molar mass. The molar mass of this element is 238
Molar mass= protons + neutrons
This means that 238= 146 + protons
Do 238 - 146
Answer is 92