Which statement explains the method to adjust the strength of the flame on the Bunsen burner?
1 answer:
You might be interested in
Answer :
The correct answer is :
Electron Affinity :
It is defined as energy released or absorbed when an electrons is added to neutral isolated atom in gaseous state .
The first electron affinity is the energy absorbed or released when one electron is to outermost shell of a neutral atom .
The first electron affinity is generally negative , when electron is added to non metals . While when electron is added to metals , the electron affinity is positive.
More the negative electron affinity , more the atom has tendency to accept the electron .
For example : F(g) + e⁻ → F⁻(g) ΔH⁰ = - 328.0
- 328.0 represents first electron affinity of Fluorine atom .
First electron affinity for Calcium can be written as :
The symbol for Calcium in its ground state is Ca . Since the electron (e⁻) is added so it is written on left side or reaction . The calcium will accept the electron and will form a negative ion as Ca⁻ .
Hence the equation goes as