Ch. 4 & 5  atom & AO                       65 points                                                         honors chemistry

In problems involving any calculation, show your work in an organized manner, include any relevant equation (or formula).

1. Based on the below hypothetical experimental  data  [10 points]

Type of beans

# beans in sample

# g for 10 beans

Red

30

8

White (lima)

20

10

Green (peas)

70

12

what is the average mass of a bean in the sample ?

2. Fill-in the below table. [17 points]

symbol

# protons

# neutrons

# electrons

charge

Atomic mass

120Sn 4+

 

 

 

 

 

 

24

 

 

+ 3

55

 

 

 

14

0

30

 

 

17

12

 

32

3. Sketch the ___ atomic orbital; as appropriate, to show the orientation of the AO with respect to the x-, y-, and / or z- axis.  [8 points]

a. Px

b. dyz

4. Sketch the orbital diagram for ___; use the short-hand “bracket” notation.  [10 points]

a. Magnesium:

b. Arsenic

5. If there are only 66Zn and 64Zn isotopes, then what is the % of each isotope in any sample of zinc ?  [10 points]

6. Write the electron configuration for ___  and identify the valence- and core- electrons.  [10 points]

a. Nitrogen

b. Iodine

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Name:  _____________________                              date:  __________________               period: _______

 Ch. 4 & 5  atom & AO                       retest               65 points                                                         honors chemistry

In problems involving any calculation, show your work in an organized manner, include any relevant equation (or formula).

1. Based on the below hypothetical experimental  data  [10 points]

Type of beans

# beans in sample

# g for 10 beans

Red

30

8

White (lima)

20

10

Green (peas)

70

15

what is the average mass of a bean in the sample ?

2. Fill-in the below table. [17 points]

symbol

# protons

# neutrons

# electrons

charge

Atomic mass

120Sn 2+

 

 

 

 

 

 

24

 

 

+ 3

55

 

 

 

14

0

30

 

 

17

18

 

32

3. Sketch the ___ atomic orbital; as appropriate, to show the orientation of the AO with respect to the x-, y-, and / or z- axis.  [8 points]

a. Pz

b. atom tst

4. Sketch the orbital diagram for ___; use the short-hand “bracket” notation.  [10 points]

a. Magnesium:

b. Arsenic

5. If there are only 38K and 41K isotopes, then what is the % of each isotope in any sample of potassium ?  [10 points]

6. Write the electron configuration for ___  and identify the valence- and core- electrons; use the short-hand “bracket” notation.  [10 points]

a. Nitrogen

b. Iodine