answersLogoWhite

0


Best Answer

When rubidium (Rb) and phosphorus (P) bond ionically, they form the compound rubidium phosphide, and it has the formula Rb3P. This is because rubidium has a charge of +1 during bonding (because of its 1 valence electron) and phosphorus has a charge of -3 (because of its 5 valence electrons - see "octet rule.") Thus, it takes 3 rubidiums to satisfy phosphorus' need for 3 electrons. It is incorrect to call this compound "rubidium tri-phosphide," because this scenario is the only way those two elements can bond, so any prefixes would be redundant. In the naming of ionic compounds, the cation comes first, and its name is unchanged, but the anion gains the suffix "-ide."

User Avatar

Wiki User

10y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How do you express Rb and P3- as a chemical formula?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What is the chemical formula for rubidium?

Rb


What is the chemical formula of Rb and N?

The rubidium nitride has the chemical formula Rb3N.


What is the chemical formula of rubidium bromide?

RbBr is the chemical formula for rubidium bromide. Rb stands for rubidium and Br for bromine.


Is the compound rbcl ionic or covalent?

The compound RbCl is ionic because it is formed between a metal (Rb) and a non-metal (Cl). Metal and non-metal combinations typically result in ionic compounds where the metal loses electrons to form cations and the non-metal gains electrons to form anions.


What is the chemical formula for rubidium nitrate?

These are the ions and their charges: Rb+1 N-3The charges have to add up to zero, so two +1 Rb ions were added to cancel out the -3 charge of N: Rb+1 Rb+1 Rb+1 N-3Simplify: Rb3N


What is the chemical formula for the mineral rubidium?

Rubidium is an element and its chemical symbol on the periodic table is Rb [Atomic number:37]


What is the oxide formula for Rb?

Since Rb forms a 1+ ion the formula for rubidium oxide is Rb2O.


What is the formula with rubidium?

Rubidium does not have a formula but a symbol: Rb.


What is the chemical formula for the compound formed between rubidium and oxygen?

The chemical formula for the compound formed between rubidium and oxygen is rubidium oxide - Rb2O.


What is the chemical symbol of rubidium?

The chemical symbol of rubidium is Rb Rb-- atomic # 37, atomic weight 85.87


What is the chemical formula for rubidium phosphite?

The chemical formula for rubidium phosphite is Rb3PO3.


What is the formula for Rb and O?

Rb is rubidium, O is oxygen. They will combine to form Rb2O which is called rubidium oxide.