What is the charge on the Mn ions in Mn2o3? 1+, 2+, 3+,3-,4+?

Identify a specific example for each type of technology

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.

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17