Chemistry
Complete the table below by identifying A, B, C, D, E and F.
| Element | Symbol | Number of protons | Number of neutrons | Number of electrons |
|---|---|---|---|---|
| Fluorine | 9F19 | 9 | A | B |
| Aluminium | C | D | 14 | 13 |
| Potassium | 19K39 | E | F | 19 |
Atomic Structure
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Answer
A → 10
B → 9
C → 13Al27
D → 13
E → 19
F → 20
Completed table is shown below:
| Element | Symbol | Number of protons | Number of neutrons | Number of electrons |
|---|---|---|---|---|
| Fluorine | 9F19 | 9 | 10 | 9 |
| Aluminium | 13Al27 | 13 | 14 | 13 |
| Potassium | 19K39 | 19 | 20 | 19 |
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Related Questions
What are isotopes? How does the existence of isotopes contradict Dalton's atomic theory?
What is valency ? Name two elements having variable valency and state their valencies.
State the mass number, the atomic number, number of neutrons and electronic configuration of the following atoms.
(a) 12C6
(b) 16O8
(c) 19F9
(d) 20Ne10
(e) 27Al13
(f) 35Cl17
Also, draw atomic diagrams for each of them.
Draw the diagrams representing the atomic structures of the following:
(a) Nitrogen
(b) Neon