Help me please 1. An atom of this element gives up 2 electrons in chemical reactions, has an equal number of protons and neutrons in the nucleus. This element is more active than magnesium. Name it. How many electron layers are there around the nucleus in this atom? Can this element be in nature in a free form? Why? Make up any equation that proves its activity using the electronic balance method.
2. Make equations of possible chemical reactions between the following substances: sodium hydroxide, magnesium chloride, sulfuric acid, barium chloride, magnesium, copper (II) sulfate. Write one of the reactions you have compiled not only in molecular form, but also
in ionic form.
3. This metal is stored in special conditions: in a vacuum or in kerosene. It is vital for the normal course of metabolic reactions in the human body, is used in agriculture and paints the flame in pink-purple color. Name the element that forms this metal and its compounds.

taukebai2002    2   13.05.2021 15:17    0