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
Answer:
the process of turning from liquid into vapour.
Answer:
The setup above is used to collect hydrogen gas
Option 1 : 1900 - 1786 = 114
Option 2 : 1450 - 1300 = 150
Option 3: 1950 - 1833 = 117
Option 4: 2000 - 1822 = 178
Option 1 has the lowest energy rate so ver time would be the best deal.
Answer:
The chemical elements are arranged in order of increasing atomic number. The horizontal rows are called periods and the vertical columns are called groups. Elements in the same group have similar chemical properties. This is because they have the same number of outer electrons and the same valency.
