An Aluminum Ion, Al³⁺, Has

question 87

Multiple Choice

An aluminum ion, Al³⁺, has:

• A) 13 protons and 13 electrons
• B) 27 protons and 24 electrons
• C) 16 protons and 13 electrons
• D) 13 protons and 10 electrons
• E) 10 protons and 13 electrons

---

Definitions:

Foraminiferans

Single-celled protists with shells, known for their role in marine ecosystems and as indicators of environmental change.

Rhizarians

A group of mostly unicellular eukaryotic organisms that include foraminifera, radiolarians, and cercozoans, characterized by their amoeboid movement and complex shell structures.

Coccolithophorids

A group of planktonic algae that produce calcium carbonate plates known as coccoliths, contributing significantly to marine sediments.

Brown Algae

A large group of mostly marine multicellular algae, including many seaweeds, that are typically brown due to the presence of fucoxanthin pigment.