Which of the following statements are true?
a. the energy change for this process is the electron affinity of the ca+ ion.
b. the energy change for this process is the negative of the first ionization energy of the ca atom.
c. the energy change for this process is the negative of the electron affinity of the ca atom.

c.The energy change for this process is the negative of the electron affinity of the Ca atom

Explanation:

This is the case as electron affinity denotes the energy released or absorbed when an atom gains an electron.

The energy change for this process is the negative of the first ionization energy of the Ca atom. TRUE

The energy change for this process is the electron affinity of the Ca+ ion. TRUE

the other one is false

Explanation:

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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