Solar Lights Change Colors

I need help I'll give you points?

1. When Mendeleev made his arrangement of elements in an array, it was found that the evidence fell ____ groups on the table. (1 point) the same mass of similar size with similar properties in the same color 2. Each element has its own atomic number. The atomic number is the number ____ of the nucleus of an atom of the element. (1 point) 3 neutrons proton electron positron. What is the name of the elements in Group 2 of the table on a regular basis? (1 point) metal halogen boron and soda alkaline earth metals family in April. ____ Duct electricity when exposed to light, so it is used in solar cells and light meters. (1 point) Sulphur Selenium Boron Bromine Supplement 5. A n () ____________________ is the name given to a row elements of the periodic table of the melting point and density change gradually and predictably?

1. two properties similar. 3 electrons. alkaline earth metals 4. Selenium 5. period

Galactic Federation Of Light Sheldan Nidle August 3 2010

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