Periodic Trends

2. Negatively charged Ion.
4. Elements in group VIIA of the periodic table. Reactive nonmetallic elements that form acidic compounds.
6. Positively charged Ion.
8. Elements that make up group IIA of the periodic table. Reactive and form basic oxides.
11. Metallic elements occupying the central block of the periodic table. Form coordination compounds that show variable and valence.
14. When elements are listed in order of atomic numbers, they will fall into recurring groups.
15. Elements that make up group Ia of the periodic table. Reactive.
16. Person that arranged the periodic table.
17. Atom with a non neutral charge. Happens due to a loss or gain of electrons.
18. Tendency for an atom to attract Electrons.
19. Gaseous Elements in Group 0 that almost entirely unreactive.

1. Amount of energy to move an electron from an atom.
3. Elements with physical and chemical properties that are between metal and non-metals.
5. Elements that represent their groups without anomalies.
7. Elements that lack metallic attributes and are good insulators of electricity and heat.
9. Column on the periodic table.
10. Elements that are denser and are good conductors of electricity and heat.
12. Row on the periodic table.
13. Distance between the center of the nucleus to the outermost electron orbitals.