- #1
CAH
- 48
- 0
A neutral atom of radium isotope may be represented by:
228
Ra (88 proton number, 228 nucleon number).
88
A
Ra (A:nucleon number, Z: proton number).
Z
...Is a neutral atom of different isotope of radium. State a possible value for A and for Z.
I know that neutral means the number of protons will be the same as electrons so net charge=0 but I am confused as to why (in the mark scheme) it shows: 228 ± 10.
I know the proton number will stay the same, but why is the nucleon number only plus or minus 10??
Thanks
228
Ra (88 proton number, 228 nucleon number).
88
A
Ra (A:nucleon number, Z: proton number).
Z
...Is a neutral atom of different isotope of radium. State a possible value for A and for Z.
I know that neutral means the number of protons will be the same as electrons so net charge=0 but I am confused as to why (in the mark scheme) it shows: 228 ± 10.
I know the proton number will stay the same, but why is the nucleon number only plus or minus 10??
Thanks