Explanation:
1) write the electronic configuration of A and B
The electronic configuration is given as:
An electronic configuration of an atom shows how electrons are arranged in the shells of the atom.
Basically,
A - 9 = 2, 7
B - 11 = 2, 8 ,1
the shell notation as shown above uses the numbers to denote the sum of the electrons in all orbitals of each energy level listing from the electrons closest to the nucleus up and to the outermost shell.
2) which type of Bond A and B will form?
They will form an ionic bond:
Element B has an electron in its outermost shell
Element A has 7 electrons.
To make B have stable configuration, it will have to lose one of its valence electron to A.
This way B will have a charge of +1 and A will have a charge of -1.
By this, there will be an electrostatic attraction between both ions and an ionic bond will form.
3) write the formula of the compound formed by A and B
The formula of the compound:
A B
Combining
power 1 1
Exchange
of power 1 1
Formula of
compound AB
learn more:
Ionic bond brainly.com/question/6071838
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