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Get Answers to all your Questions
Q. 19. Complete the following table.
Answers (1)
First row:
atomic number = 9
so, the element is Fluorine.
Atomic no. = No. of protons = no. of electrons = 9
Mass number = no. of protons + no. of neutrons = 9 + 10 = 19
Second row:
Since atomic no. is 16 so, no. of protons = no. of electrons = 16
No. of neutrons = Mass no. - no. of protons = 32 - 16 = 16
Third row:
No. of protons = Atomic no. = 12
So, the element is Magnesium.
No. of electrons = no. of protons = 12
No. of neutrons = Mass no. - no. of protons = 24 - 12 = 12
Fourth row:
No. of protons = Atomic no. = 1
So, the element is Deuterium.
No. of electrons = no. of protons = 1
No. of neutrons = Mass no. - no. of protons = 2 - 1 = 1
Fifth row:
No. of protons = Atomic no. = 1
The element is Protium since the mass number is 1.
So the Table becomes,
|
Atomic number |
mass number | Number of neutrons | Number of protons | Number of electrons |
Name of the element |
| 9 | 19 | 10 | 9 | 9 | Fluorine |
| 16 | 32 | 16 | 16 | 16 | Sulfur |
| 12 | 24 | 12 | 12 | 12 | Magnesium |
| 1 | 2 | 1 | 1 | 1 | Deuterium |
| 1 | 1 | 1 | 1 | 0 | Hydrogen ion |
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