Answer:try to make a good pic please I have ideas about the topic
The answer is 3. As 5 * 3 = 15.
Is there any other equations I may be able to help you with? :)
Answer
Gymnastics
Explanation:
for the simple fact that they do cool stuff
Sodium-22 remain : 1.13 g
<h3>Further explanation
</h3>
The atomic nucleus can experience decay into 2 particles or more due to the instability of its atomic nucleus.
Usually, radioactive elements have an unstable atomic nucleus.
General formulas used in decay:
T = duration of decay
t 1/2 = half-life
N₀ = the number of initial radioactive atoms
Nt = the number of radioactive atoms left after decaying during T time
half-life = t 1/2=2.6 years
T=15.6 years
No=72.5 g
Kr 5s2 is the correct noble gas configuration for strontium