Name _________________________________________
1. Fill in the orbital notation (arrows) below for potassium (K):
__
1s
__
2s
__ __ __
2p
__
3s
__ __ __
3p
__ __ __ __ __
3d
__
4s
2. If potassium were to form an ion, would it most likely gain electrons or lose electrons?
3. Fill in the orbital notation below for the potassium ion.
__
1s
__
2s
__ __ __
2p
__
3s
__ __ __
3p
__ __ __ __ __
3d
__
4s
4. How many main energy levels (shells) are occupied by electrons in a neutral atom of
iodine?
5. How many electrons are in the outermost shell of a neutral aluminum atom?
6. Will sodium most likely gain or lose electrons if it forms an ion?
7. What is the charge of a sodium ion?
8. How many protons are in the nucleus of a bromine atom?
9. How many main energy levels are occupied by electrons in a neutral atom of bromine?
10. How many electrons are in the outermost shell of a neutral bromine atom?
11. Will bromine most likely lose or gain electrons to form an ion?
12. To be stable, magnesium would most likely gain or lose electrons?
13. When magnesium forms an ion, it will have an electron configuration identical to
which element?
14. When oxygen forms an ion it will most likely
a. gain electrons so that it has more electrons than protons
b. lose electrons so it has more protons than electrons
c. lose protons so it has fewer protons compared to electrons
d. gain electrons so it has the same number of electrons as protons
e. lose electrons so it has the same number of electrons as protons
15. Electrons have a _____ charge and protons have a ______ charge.
16. What is the most likely charge on a Cesium ion?