Group II Elements and Their Compounds

1. A regular, repeating arrangement of atoms, ions, or molecules in a crystalline solid.
4. The energy required to remove one mole of electrons from one mole of gaseous atoms to form one mole of gaseous ions.
5. The ability of an atom to attract electrons in a chemical bond. It increases across a period and decreases down a group in the periodic table.
6. The tendency of a substance to undergo chemical reactions, either by itself or with other substances.
7. The practice of cultivating soil, growing crops, and raising livestock for food, fiber, and other products.
9. The distance from the nucleus of an atom to the outermost electron shell. It generally decreases across a period and increases down a group in the periodic table.
10. Pure substances consisting of only one type of atom, distinguished by their atomic number (number of protons).

2. Group 2 elements in the periodic table that are reactive, form +2 ions, and are commonly found in compounds.
3. The process where water molecules associate with or bind to another substance.
8. The ability of a substance to dissolve in a solvent, usually water, to form a solution. It is influenced by temperature, pressure, and the nature of the solute and solvent.