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Electron Configuration and Ion Homework Questions

 

Answer all questions in complete sentences.

 

1.      What holds electrons to an atom?  In other words, why don’t electrons ditch the nucleus and go flying off into space?

2.      How many electrons can occupy the first energy level?  Second energy level?  Third energy level?

3.      What is the most transient part of an atom:  electrons, protons, or neutrons?  By this I mean, which particle is most easily and frequently added or removed?

4.      What part of an atom is directly involved in a chemical reaction?  By this I mean, what gets transferred or shared between atoms when there is a chemical reaction?

5.      What is the valence level?

6.      What is/are the valence electrons?

7.      If an atom could “feel”, how would it feel about having only a partially full valence level?

8.      If an atom could “feel”, how would it feel about having a full valence level?  Which would it prefer, a full or partially full valence level?

9.      How many protons does a lithium atom have?

10.  How many electrons does a lithium atom have (remember the term atom means it is neutral)?

11.  If a lithium atom loses one electron, what is the charge of the resulting ion?

12.  What is the name for an atom that has become electrically charged by gaining or losing electrons?

13.  What is the charge on a chlorine ion that has gained an electron?

14.  What is the charge of a magnesium ion that has lost two electrons?

15.  What group of atoms all have a full valence level?

16.  What would fluorine have to do to obtain a full valence level?

17.  What would sodium have to do to obtain a full valence level?

18.  What elements are closer to have a full valence level, those at the sides of the periodic table or those in the middle?  Explain your answer.

19.  Do atoms on the left side of the periodic table need to gain or lose electrons to have a full valence level?

20.  Do atoms on the right side of the periodic table need to gain or lose electrons to have a full valence level?