Write down the formula by using onion and cation of Aluminium oxide

1.	Write down the formula by using onion and cation of Aluminium oxide
Answer» Answer: The formula for aluminum oxide is Al2O3. Explanation: The correct answer is Al2O3. Let US see how we got the answer; Look at the electronic arrangement of AL and O ATOMS. Al ( Z= 13) has 13 electrons with following electronic configuration. 1s22s22p63s23p1 It loses three electron in its 3s and 3p subshell to achieve stability and forms ION Al3+. Al3+ = 1s22s22p6 O ( Z=8) on the other hand has eight electrons and wants to gain two electrons to achieve stable noble gas configuration.Oxygen atom on gaining two electrons forms negative oxide ion, O2− ion. O ( Z=7) = 1s22s22p4 O2− = 1s22s22p6 Three Oxygen atoms gains two electrons each ( total of six) from two Al atoms, each Al atom loses three electrons (total of six) to three oxygen atom , in this PROCESS each Al atom becomes Al3+ ion and Oxygen atom after gaining two electrons becomes O2− ion.

Answer»

Answer:

The formula for aluminum oxide is Al2O3.

Explanation:

The correct answer is Al2O3.

Let US see how we got the answer; Look at the electronic arrangement of AL and O ATOMS.

Al ( Z= 13) has 13 electrons with following electronic configuration. 1s22s22p63s23p1

It loses three electron in its 3s and 3p subshell to achieve stability and forms ION Al3+.

Al3+ = 1s22s22p6

O ( Z=8) on the other hand has eight electrons and wants to gain two electrons to achieve stable noble gas configuration.Oxygen atom on gaining two electrons forms negative oxide ion, O2− ion.

O ( Z=7) = 1s22s22p4

O2− = 1s22s22p6

Three Oxygen atoms gains two electrons each ( total of six) from two Al atoms, each Al atom loses three electrons (total of six) to three oxygen atom , in this PROCESS each Al atom becomes Al3+ ion and Oxygen atom after gaining two electrons becomes O2− ion.

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