The most eletronegative elements are to the right of the periodic table. The electronegativities increase as you move right.
Fluorine and Chlorine are the highest.
Fluorine is 4.0
Chlorine is 3.0
Fluorine is the answer.
Answer is because
Please give feedback
Dwarfs - A
Giants - C
Main Sequence Stars - B
Supergiants - D
The element has :
- core electrons : 10
- valence electron : 5
<h3>Further explanation </h3>
Valence electrons : electrons used in forming bonds (the outer shell)
Core electrons : electrons that belong to atoms except for valence electrons. It is located close to the core and fills the inner shell.
Electron configurations for an element with the atomic number: 15 1s²2s²2p⁶3s²3p³
Neutral atoms ⇒ atomic number= number of protons=number of electrons
The electron configuration shows that the valence electron of the element = 5(3s²3p³) so the number of Core electrons:
Core electron = atomic number (total number of electrons) - valence electron
Core electron = 15 - 15
Core electron = 10
