Q2 of 40 Page 131

From the structures given below, Tabulate the following:

1. Valence electron


2. Valency


3. Atomic Number


4. Mass number


5. Electronic configuration




Figure1:


1. Valence electron: 4


2. Valency: 4


3. Atomic Number: 6


4. Mass number: 12


5. Electronic configuration: 2, 4


Figure2:


1. Valence electron: 2


2. Valency: 2


3. Atomic Number: 12


4. Mass number: 24


5. Electronic configuration: 2, 8, 2


Figure3:


1. Valence electron: 7


2. Valency: 1


3. Atomic Number: 17


4. Mass number: 35


5. Electronic configuration: 2, 8, 7


Figure4:


1. Valence electron: 2


2. Valency: 2


3. Atomic Number: 20


4. Mass number: 40


5. Electronic configuration: 2, 8, 8, 2


Figure5:


1. Valence electron: 1


2. Valency: 1


3. Atomic Number: 19


4. Mass number: 39


5. Electronic configuration: 2, 8, 8, 1


Figure6:


1. Valence electron: 3


2. Valency: 3


3. Atomic Number: 13


4. Mass number: 27


5. Electronic configuration: 2, 8, 3


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