We will to see the pictures to be able to help you
The periodic table is organized by the atomic mass of the elements. It means if the element is in Group 2a in the periodic table, it has 2+ ions.
Sorry but I only know a few
17- decomposers
18- decomposition
21- 10% is lost so 90%
Answer:
electroluminescence is a production of light by the flow of electrons, as within certain crystals. An example is at most resataurants with a bright sign that either says open or closed.
Explanation: