PERIODIC TAB

3. The atomic number of an element is the same as the number of protons in that particular nucleus of an, what?
4. The property of an element that determines the number of other atoms with which an atom of the element can combine.
7. the lightest element
8. the lightest metal
12. The interatomic linkage that results from the sharing of an electron pair between two atoms.
14. What is the maximum number of electrons that can accommodate in a k shell?
17. The total number of electrons that an atom either gains or loses in order to form a chemical bond with another atom.
19. While moving down in a group, the metallic character?

1. Russian chemist who developed the periodic classification of the elements.
2. The arrangement of electrons in orbitals around an atomic nucleus.
3. Any of the six chemical elements that make up Group 1 (Ia)
5. In the period arranged of elements in the modern periodic table, what is increasing from length to right?
6. an element with zero valency
9. The change in energy experienced when an electron is added to a neutral atom in the gaseous phase to form a negative ion.
10. The addition of mass of protons and neutrons.
11. What classification of elements are found on the right side toward the upper right corner?
13. Is the amount of energy required to remove an electron from the valence shell of an isolated gaseous atom.
15. horizontal row of periodic table
16. Group 18 is known as?
18. Elements that exist mainly found in the upper right corner and on the right side of the periodic table.