Question

an atom of element A contains 12 neutrons 11 protons 11 electrons and another element b contains 18 neutrons and 17 protons show how an atom of A may combine chemically with an atom of B

Answer 1

ANSWER

The atomic mass of an atom is the sum of protons and neutrons in an atom.

Atomic mass= No.of protons +No. Of Neurons

=11+12

=23

Answer 2

Answer:

A and B together will form an ionic compound.

Explanation:

No. of electrons = No of protons = 11 (A)

                                                      = 17(B)

Electronic configuration of A = 2,8,1

Electronic configuration of B =2,8,7

Valence electrons in A = 1

Valence electrons in B = 7

Valency of A = +1

Valency of B = -1

the compound formed will be :- AB