From its atomic number of 15, it is possible to predict that the phosphorus atom has 5 neutrons, 5 protons, and 5 electrons 30 neutrons 15 neutrons and 15 protons 8 electrons in its outermost electron shell 15 protons and 15 electrons

The correct answer is :15 protons and 15 electrons.

Explanation:

Atomic number of an elements tells us total number of protons present in the an atom. And as we know that atom is an electrically neutral sphere so, atomic number also tells us about the total numbers of electron present in an atom of an element.

Atomic mass of an element tells us about the total number of neutrons and protons present in the nucleus of an atom.

Phosphorous has atomic number of 15 which means that in single phosphorus atom there are 15 protons and 15 electrons.

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explanation:

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a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.