Answer:WHAT IS THE ELEMENT NAME?
The most soluble of the compounds given above is [NH4]3PO4. [NH4]3PO4 is a salt of ammonium and phosphate; it is a white crystal at room temprature. It is an highly unstable compound and thus easily decompose when mixed with water.
Carbon always has six protons, as its atomic number is six. Carbon twelve would have six neutrons (six protons plus six neutrons) in the nucleus of the atom. So the atomic number is 12
