How many oxygen MOLECULES are needed to produce 2 molecules of water (H2O)?

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

What is the chemical formula for the compound formed between sodium and flour one

What is calcium oxide+diphosphorus pentoxide--> calcium phosphate balanced