Answer :
Answer: The correct answer is option B. electron.
Explanation:
There are 3 subatomic particles:
- Electrons: They carry negative charge and are present in orbits around the nucleus of an atom.
- Protons: They carry positive charge and are present inside the nucleus of an atom
- Neutrons: They does not carry any charge and are present inside the nucleus of an atom.
An atom forms an ion, when it looses or gains an electron.
- When an atom looses electron, it form a positive ion known as cation.
- When an atom gains electron, it form a negative ion known as anion.
Hence, the correct answer is option B. electron.
The particle(s) of the atom that is needed to be expelled or gained in an alchemy process which involves transformation of one element into valuable elements or atom to another is B:Electron.
- Alchemy can be regarded as branch of philosophical and protoscientific tradition that is traceable to China, and Europe. In the process of transformation of one element to another useful element or compounds , there is usually transfer of electron.
- Electronegative element like chlorine usually gain electron and are anion, while electropositive elements like potassium will loose electron( cation) all involves the transfer of electron.
Therefore, option B is correct.
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