Atomic Mass of Potassium is .
A) 38
B) 39
C) 40
D) 41
Answer:
Option B) 39 is correct.
Explanation:
Atomic Mass of any substance is the sum of the number of protons and the number of neutrons in the nucleus of that atom.
For Potassium,
- Number of Protons = 19
- Number of Neutrons = 20
Thus,
Atomic Mass of Potassium(K) = 19 + 20 = 39
In absolute terms, the average atomic mass of Potassium is 39.0983 amu. It is calculated taking into account all the isotopes of Potassium.