Respuesta :
The question is incomplete, here is the complete question:
Give the charge and full ground-state electron configuration of the monatomic ion most likely to be formed by each element: (a) P, (b) Mg, (c) Se
Answer:
For a: The electronic configuration of the monoatomic ion formed is [tex]1s^22s^22p^63s^23p^6[/tex]
For b: The electronic configuration of the monoatomic ion formed is [tex]1s^22s^22p^6[/tex]
For c: The electronic configuration of the monoatomic ion formed is [tex]1s^22s^22p^63s^23p^64s^23d^{10}4p^6[/tex]
Explanation:
An ion is formed when a neutral atom looses or gains electrons.
- When an atom looses electrons, it results in the formation of positive ion known as cation.
- When an atom gains electrons, it results in the formation of negative ion known as anion.
For the given elements:
(a) Phosphorus
This is the 15th element of the periodic table having electronic configuration of [tex]1s^22s^22p^63s^23p^3[/tex]
This element will gain 3 electrons to form [tex]P^{3-}[/tex] ion
The electronic configuration of the monoatomic ion formed is [tex]1s^22s^22p^63s^23p^6[/tex]
(b) Magnesium
This is the 12th element of the periodic table having electronic configuration of [tex]1s^22s^22p^63s^2[/tex]
This element will loose 2 electrons to form [tex]Mg^{2+}[/tex] ion
The electronic configuration of the monoatomic ion formed is [tex]1s^22s^22p^6[/tex]
(c) Selenium
This is the 34th element of the periodic table having electronic configuration of [tex]1s^22s^22p^63s^23p^64s^23d^{10}4p^4[/tex]
This element will gain 2 electrons to form [tex]Se^{2-}[/tex] ion
The electronic configuration of the monoatomic ion formed is [tex]1s^22s^22p^63s^23p^64s^23d^{10}4p^6[/tex]
