According to the law of conservation of matter, which statement about chemical reactions is true? a. atoms cannot be created or destroyed by chemical reactions. b. every atom destroyed in a chemical reaction must be replaced. c. energy is created as atoms are destroyed in chemical reactions. d. atoms are created by some reactions and destroyed by others.

The law of conservation of matter basically states that matter can’t be created or destroyed, only changed in form, so you can rule out any option that mentions destroying or creating matter. That leaves only option A. Atoms cannot be created or destroyed by chemical reactions.

Atoms cannot be created or destroyed by chemical reactions.

Explanation:

The law of conservation of matter states that atoms cannot be created or destroyed by chemical reactions, but can only change form. In a chemical reaction, the atoms stay the same but they are combined in new ways.

the electronic configuration of an atom with eight electrons is 1s²2s²2p⁴. the orbital diagrams are shown in the figure.

as per the hunds rule:

1. electrons tend to avoid being in the same orbital as per as practicable.

2. electrons in different orbitals of the same energy will have their spin parallel.

this can be illustrated from the multiplicity of the orbitals of the atom. as there are four electrons in the p orbital and p orbital has 3 sub-shells. the electrons can be fed in different ways as shown in the figure but the correct orbital diagram will be as per the hunds rule.

beta decay is the answer