Across
- 3. if it has 6protons and 5electrons what is the charge
- 4. what dose P equal
- 7. Mendeleev who published a periodic table of the elements.
- 9. what is the formula for radius
- 11. S stands for
- 12. metals what row has the stable metals
- 13. elements The s-block elements and the p-block elements are together called the
- 15. what is the periodic table order by
- 18. affinity When energy is released in a chemical reaction or process, that energy is expressed as a negative number.
Down
- 1. what is one of the noble metals
- 2. what is the happy number
- 3. protons:78 Neutrons:17 platinum has a mass number of 195 and contains 74 electrons. How many protons and neutrons and its charge is/
- 5. the ions that are positive are called
- 6. is a vertical column of the periodic table
- 8. What is the most of on the periodic table
- 10. solve C2 H3 O
- 14. how much charge dose OH- have
- 16. Radius generally decrease from left to
- 17. what is the first row called on the periodic table called
- 19. what is the change of a calcium ion with 18 electrons
