Hello dosto their is one trick to remember the all radioactive series

TNUA -- TERA NAA ULLU AA

T - THORIUM SERIES-4n
N- NEPTUNIUM SERi -4n+1
U- Uranium RADIUM-4n+2
A -Actinium series- 4n+3

Dosto ye trick mene khud bnae hai ,,I hope this will help u

One more trick for u friends

The liquid drop model- the binding energy depends upon general properties

B=B1+B2+B3+B4+B5
A = mass number

B1--- Volume energy
B2-- surface energy
B3-- Coulomb energy
B4-- Asymmetry energy
B5 -- odd even effect

Sari binding energies mass number par depend karti hai

VSCAO --- VISHAL SIR CA OFFICER 😅

Volume --- A
Surface energy --- A⅔
Coulomb Energy ---- A -⁴/³
Asymmetry --- 1/A
Odd even effect--- ( 0, constant / A¾)

I hope this will help u in exam ,, agar trick achi lage ,, plz send me thumb ,, it will motivate me to help u more

Sari binding energies se first letter utha kar trick bnae hai