What is the charge of the ion (oxidation number) on the ion typically
formed by sodium?

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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the answers would be

the first one and the second one

the ratio of the conjugate base to the acid required to attain the desired ph.