How many elements are in this compound? Rb3PO4

4

2

3

1

The three unique elements in this compound are

For each molecule, there are three elements of Rubidium, one Phosphorus, and four elements of oxygen.

Side note: The compound is known as Trirubidium phosphate. The "tri" indicates 3 Rubidium atoms, and the phosphate part is

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;