Identify by group number two groups on the periodic table that are very reactive, and state the numbers of valence electrons the elements in each group have.

Which of the following electromagnetic waves can create ions?

What is the percent by mass of oxygen in fe2o3

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.