What values are important/essential for a mentor (nurse mentor)? Benefits of a nurse mentorship?

Job responsibilities and plans of the nurse mentor

A couple of topics  would like to include in the work:

What is a nurse mentor? Why is a nurse mentor important?

What values are important/essential for a mentor (nurse mentor)?
Benefits of a nurse mentorship?

Nurse mentor job responsibilities and plan.

Would like if there′s included real researches done about nursing mentor (PubMed, Medline, Ebsco etc. if possible). (For example: https://pubmed.ncbi.nlm.nih.gov/28244960/).