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The Group 15 elements, also called the pnictogens, Group V elements, or Group VB elements, are a group on the periodic table. They have many different properties. Nitrogen is a colorless unreactive gas that helps us breathe. Phosphorus is a super reactive white or red solid nonmetal. Arsenic is a highly toxic semimetal. Antimony is also a semimetal. Bismuth is a radioactive metal. Moscovium is a man made element that is radioactive. They all have 5 valence electrons but most of them form +5 or -3 chemical compounds.