Vaping is... A. ...Holding an e-cigarette or vape device to look cool. B. ...The act of inhaling and exhaling tobacco from a cigarette C. ...The act of inhaling and exhaling water vapor only. D. ...Using an e-cigarette or vape device to inhale the vapor.

D

Explanation:

Process of elimination. There is more than just water vapor in a vape so it can't be D, it isn't a cigarette so it can't be B, and A is just clearly not the answer haha.

iron and sleel

make siroeel

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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