171
The missing number in the nuclear reaction is 191. The complete equation is 175 78 Pt + 4 2 He -> 191 80 Hg.
beta particle apex
The reaction is already balanced as it is written: Cl₂ + 2Kl → 2KCl + Cl₂. Each side of the reaction has the same number of atoms for each element.
The balanced reaction is: 2Cl + 2KI → 2KCl + I2. It is balanced by ensuring there are the same number of each type of atom on both sides of the reaction arrow.
In this reaction, sodium (Na) increases its oxidation number from 0 to +1 as it goes from elemental form (Na) to NaOH.
To find the nuclear charge of chlorine with 22 neutrons, you need to know the atomic number of chlorine, which is 17. The nuclear charge is equal to the atomic number plus the number of neutrons, so in this case, it would be 17 (atomic number) + 22 (neutrons) = 39.
171
91
Pasted in problem, which is simple addition. 229 229 229
This is an example of beta decay, specifically beta-minus decay. In this reaction, a neutron in the nucleus is transformed into a proton, electron, and anti-neutrino. This results in the formation of 90Zr from 90Y.
beta particle
Beta -apex- :D
0.88
6.5
-6
It is: -5+1+8+5 = 9
6
The missing number is 49. This is why: 1 plus 2 equals 3, then 3 squared is 9. 2 plus 3 equals 5, then 5 squared is 25. Therefore, the missing number must be 49 to make the number sentence (3 plus 4 equals 7, then 7 squared is 49) true.