how the compound MgCl2 and CaO be formed their element
Answers
Answer:
Magnesium forms a positive ion (cation) with a 2+ charge and chlorine forms a negative ion (anion) with a 1- charge. So two chlorine anions form an ionic bond with one magnesium cation for form MgCl2, a neutral chemical compound. ... So here Calcium donates 2 electron to oxygen and forms an ionic bond and forms CaO.
1) Magnesium Chloride (MgCl2)
Magnesium atom (Mg). Electronic configuration (2,8,2)→ -2e- Magnesium ion Mg²+ (2,8).
Chlorine atom (Cl). Electronic configuration (2,8,7)→ +1e- Chloride ion Cl-(2,8,8).
Mg²+ 2Cl- → MgCl2 (Magnesium Chloride)
a) A magnesium atom gives away 2e- and a cation of Magnesium (Mg²+) is formed, hence, the valency of magnesium is two.
b) Two chlorine atoms takes 1e- each and forms two anions of chlorine (2Cl-) (chloride), and thus, the valency of the chlorine is one.
c) After the give and take of electrons is over, the electronic configuration of all the resulting ions has a complete octet,
d) Due to the attraction, between the unit but opposite charges on all the ions, one chemical bond is formed between Mg²+ and 2Cl- each and the compound MgCl2 is formed.
2) Calcium oxide (CaO)
Calcium atom (Ca). Electronic configuration (2,8,8,2) → -2e- Calcium ion Ca²+ (2,8,8,).
Oxygen atom (O). Electronic configuration (2,6)→+2e- Oxygen ion O²- (2,8).
Ca²+ O²- → CaO
a) A calcium atom gives away 2e- and a cation of calcium (Ca²+) is formed, hence, the valency of calcium is 2.
b) An oxygen atom takes 2e- and forms anions of Oxygen (O²-) (oxide), and thus, the valency of Oxygen is two.
c) After the give and take of electrons is over, the electronic configuration of both the resulting ions has a complete octet.
d) Due to attraction between the unit but opposite charges on the two ions, one chemical bond is formed between Ca²+ and O²- and the compound CaO is formed.