1. Transient equilibrium (Transient Equilibrium) – Lamda1 <Lamda2: mean age of the parent element instead of child elements...

The position of electrons in atoms can be explained by the wave function of Schrödinger equation (Y). Completion...

Radioactivity was discovered by H. Becquerel in 1896. Becquerel named with uranium radiation. Two years later, Marie Curie...

Each element has a unique atomic spectrum. If a gas is placed in a tube and then an...

X-RAY => “It is an electromagnetic wave with a short wave“. X-RAY PROPERTIES – Not visible to the...

1. Atomic Number and Mass Number The element is a single substance that can not be broken down...

Dalton’s atomic theory was based on two laws, namely the law of conservation of mass (Lavoisier law) “The...