Across
- 1. ion formed when there are more electrons than protons
- 3. these subatomic particles are found in the nucleus of an atom and are positively charged
- 6. the way elements are arranged on the periodic table going from right to left
- 7. kind of gas that do not bond with other elements because they have a fuller outer orbital
- 10. arrangement of elements on periodic table according to number of orbitals
- 11. subatomic particle that occupy space around nucleus
- 15. bond formed by two nonmetals where they share the valence electrons
- 17. a malleable and ductile element
- 18. this kind of ion can be formed whenever there are more protons than electrons
- 19. type of electron that is on the outermost orbital of an atom
Down
- 1. most reactive group of metals found on the periodic table
- 2. atoms of an element that have different masses
- 4. arrangement of elements on periodic table according to valence electrons
- 5. English scientist that perfected the arrangement of the periodic table because he knew of the discovery of electrons
- 8. this Russian scientist was the first person to ever organize the periodic table accurately
- 9. dull and brittle elements
- 12. scientist that proposed atoms contain electrons
- 13. these subatomic particles account for some of the elements mass and are electrically neutral
- 14. smallest particle of an element that retains the element's properties
- 16. elements that are extremely reactive and are mostly found in seawater