Atomic weight of na is 23
atomic weight of cl is 35
what is the percentage of sodium in nacl?

Explanation:

1. Calculate the molar mass of NaCl

 Na = 23 g

  Cl = 35 g

Tot. = 58 g

2. Calculate the mass percent of Na

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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