A potassium (K) atom has 20 neutrons, 19 protons and 19 electrons. What is the atomic mass of potassium?
19 20 38 39
A B C D
Question: A potassium (K) atom has 20 neutrons, 19 protons and 19 electrons. What is the atomic mass of potassium?
A. 19
B. 20
C. 38
D. 39
Answer:
A potassium (K) atom has 20 neutrons, 19 protons and 19 electrons. What is the atomic mass of potassium?
39 20 38 19
A B C D
Question: A potassium (K) atom has 20 neutrons, 19 protons and 19 electrons. What is the atomic mass of potassium?
A. 39
B. 20
C. 38
D. 19
Answer:
A
A potassium (K) atom has 20 neutrons, 19 protons and 19 electrons. What is the atomic mass of potassium?
19 20 38 39
1 2 3 4
Question: A potassium (K) atom has 20 neutrons, 19 protons and 19 electrons. What is the atomic mass of potassium?
1. 19
2. 20
3. 38
4. 39
Answer:
4
A potassium (K) atom has 20 neutrons, 19 protons and 19 electrons. What is the atomic mass of potassium?
19 20 38 39
X M O L
Question: A potassium (K) atom has 20 neutrons, 19 protons and 19 electrons. What is the atomic mass of potassium?
X. 19
M. 20
O. 38
L. 39
Answer:
L
A potassium (K) atom has 20 neutrons, 19 protons and 19 electrons. What is the atomic mass of potassium?
39 20 38 19
X M O L
Question: A potassium (K) atom has 20 neutrons, 19 protons and 19 electrons. What is the atomic mass of potassium?
X. 39
M. 20
O. 38
L. 19
Answer:
X