Radioactivity
ICSE · Class 10 · Physics
All formulas from Radioactivity in ICSE Class 10 Physics. Key equations, constants, and identities for board exam preparation.
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Structure of Atom and Nucleus
Number of neutrons = A - Z
Atomic symbol = X_Z^A
Nucleus size = 10^-15 m to 10^-14 m
Isotopes, Isobars and Isotones
Isotopes: same Z, different A
Isobars: same A, different Z
Isotones: same number of neutrons
Alpha, Beta and Gamma Radiations
Alpha decay: X_Z^A → Y_Z-2^A-4 + He_2^4
Beta decay: X_Z^A → Y_Z+1^A + e_-1^0
Gamma emission: no change in A or Z
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