Which organelle is responsible for controlling the cell's activities?

Afamily is one another name for a group on the table of elements.

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?