On the shoulders of giants

Download 21.64 Kb.
Size21.64 Kb.
1   2   3   4   5   6   7
elements are placed in specific locations because of the way they look and act.

2. Periods are _____rows___ that run from ___left____ to ___right____.

3. Elements in the same period have the same _same number of atomic orbitals._______________________.

4. Every element in the first period has ____one orbital ____ shell for its ___electrons____. Every element in

the second period has ____two orbitals ______ for its _____electrons______. See the pattern?

5. Groups are _________columns______ that run from ___top___ to ___bottom______.

6. The elements of a group have the same number of ______electrons______ in their ____orbital_______


7. Every element in group one has ____one_____ electron in its outer shell. Every element in

group two has ____two_______ electrons in its outer shell.

8. Hydrogen is special because it can act like two groups, ____1______ and ____7_____.

9. Hydrogen sometimes is _____missing___________ an electron and sometimes it has an

___extra__________ electron.

10.Although helium has only _____2_____ electrons in its outer shell, it is grouped with

elements that have _____8___________.

11. The green elements on this table are called _____transition_______ elements. They each have

two electrons in their outer shell.


Use this site to fill in the blanks below:



Share with your friends:
1   2   3   4   5   6   7

The database is protected by copyright ©essaydocs.org 2020
send message

    Main page