science
Grade-9
Easy
Question
What is the valency of an element which has 13 protons and 14 neutrons?
- 1
- 2
- 3
- 4
Hint:
Aluminum has 13 electrons and its valency is 3.
The correct answer is: 3
- Aluminum is an atom that possesses 13 protons and 14 neutrons.
- The atomic number of aluminum is 13 and it has 13 electrons.
- The electronic configuration will be 2, 8, and 3.
- As it has 3 electrons in the valence shell, it tends to lose 3 electrons to attain stability.
- The valency of an electron that has 14 neutrons and 13 protons is +3.
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