How many protons do the following atoms have? 1) Cesium: ______. 6) Nitrogen: ______. 2) Carbon: ______. 7) Argon: ______. 3) Iodine: ______. 8) Vanad...
Atoms and Molecules Worksheet Using the Periodic Table displayed on the screen or in your text book, answer the following questions. What is the atomic number of the following atoms?
How many protons do the following atoms have?
55
1) Cesium: __________
7 6) Nitrogen: __________
2) Carbon: 6__________
18 7) Argon: ____________
3) Iodine: 53 ___________
23 8) Vanadium: _________
4) Mercury: 80 _________
9) Potassium: 19 _________
5) Calcium: 20 _________
10) Magnesium: 12 ________
How many electrons do the following atoms have? 11) Copper: 29 _________
14) Titanium: 22 _________
82 12) Lead: ___________
14 15) Silicon: ___________
47 13) Silver: ___________
Fill in the number of electrons in the correct energy levels below. 9 Number of Fluorine electrons: __________
10 Number of Neon electrons: ___________
No Is Fluorine Stable? ____________
Is Neon Stable? Yes ____________
Fluorine is not stable because Explain your answer: _______________________
Neon is stable because its Explain your answer: _____________________
its second energy level is not full. It is lacking one more
_________________________________________
electrons fully fill the first and second electron levels.
electron to be stable.
_______________________________________
_________________________________________
_______________________________________
Covalent Bond Drawing: Water (H2O) is made of three atoms (2 hydrogen atoms and 1 oxygen atom). Fill in the table below and then add the number of electrons to each atom in the picture. Atom Number of electrons 1 Hydrogen #1 1 Hydrogen #2 8 Oxygen Hydrogen atom #2 Hydrogen atom #1
Oxygen atom
O is unstable because it does not fully fill any of its energy levels. 1) By itself, why is oxygen unstable? _______________________________________________________ is unstable because it does not fully fill its second energy level. 2) By itself, why is hydrogen unstable? H ______________________________________________________ 1 1 3) How many electrons does oxygen share with hydrogen #1? __________ Hydrogen #2? _________
4) When both hydrogen atoms share with oxygen, how many electrons are in its outer energy level? Is the When H share with O, there are 8 electron in its outer energy level and therefore stable. oxygen atom stable? ___________________________________________________________________
Ionic Bond Drawing: Fill in the two tables based on the number of electrons before and after bonding. Drawing Directions a. Add the correct number of electrons to each atom. b. Using an arrow, show the electrons that will be transferred.
3
9
3
9
3
9
2
10
0
0
1
1
5) Why will lithium floride (Li F) be created from these two atoms? The compound Li F will be formed because pos. & neg. ions are attracted to one another.
