Ageneral change, such as increasing or decreasing numbers

a) trend
b) system
c)pattern
d)repetitive.

"a connection, a bond or common feeling between two people", or as a chemical process it stimulates love or sexual attraction

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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