How many valence electrons does the nitrogen group have I'm having trouble with this and its hard

Which of the following electromagnetic waves can create ions?

Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore

|using the periodic tablewarm-upuse the periodic table in the tools bar to answer the following questions.what elemental classification does oxygen belongto? done