Which Species Is Not Isoelectronic with the Remaining Atoms or Ions

question 89

Multiple Choice

Which species is not isoelectronic with the remaining atoms or ions listed?

• A) Kr
• B) Rb⁺¹
• C) Na⁺¹
• D) Br ^{- 1}
• E) Se ^{- 2}

---

Definitions:

Long-Term Fundraising

Long-term fundraising involves strategies and efforts planned over an extended period to secure resources or capital for an organization or project's future needs.

Build Institutions

The process of establishing and developing structures or organizations that play a foundational role in society, such as schools, banks, and legal systems.

Philanthropy

The desire to promote the welfare of others, expressed especially by the generous donation of money to good causes.

Charity

An organization set up to provide help and raise money for those in need, focusing on public benefit.