7) Aluminum forms an ion with a charge of ?
A) 2+
B) 1-
C) 3+
D) 2-
E) 0

C. 3+ ((I have to have an answer of 20 characters just ignore this))

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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