Why do the elements of period 4 start a new cycle of properties after the element argon? Select all that apply.

The electrons in the outermost energy level are primarily responsible for the properties of an element.

Additional electrons after argon begin to fill a sublevel of the n = 4 energy level.

The n = 3 energy level of argon is complete.

All the energy levels of period 4 elements are less than period 3 because the amount of energy between energy levels decrease with distance from the nucleus.

See the answer below please.

Explanation:

There are different types of mutations:

- Substitutions: the exchange of one base for another occurs (eg changes a C for an A), which could lead to a codon change that codes for a different amino acid causing changes in nascent protein, generating a codon that codes for the same amino acid without any change in nascent protein; generate a different codon for the amino acid: a stop codon and cause an incomplete protein to form.

-Insertions: base pairs are added to the DNA sequence.

-Deletions: base pairs are removed from the DNA sequence.