The table shows the number of protons neutrons and electrons in some atoms and ions + igcse
Answers
Atom Number of Electrons
A 11
B 17
Which statement is correct?
A will give up electrons to form bonds. B will give up electrons to form bonds. Both A and B will be chemically unreactive. Both A and B will gain electrons to bec
A will ve up electrons to form bonds.
Step-by-step explanation:
The shell configuration of atoms is 2, 8, 8, 18, …
Thus, an atom has a filled shell when it has two electrons or ten (2 + 8) electrons or 18 (2 + 8 + 8) electrons.
A has 11 electrons, one more than necessary for a filled shell. It will give up that electron to reach a filled shellB has 17 electrons, one less than is needed for a complete shell. It will gain electrons to reach a filled shell.
Option C is wrong. Both A and B will be chemically reactive, because each is only one electron short of a complete shell.
Option D is wrong. Both A and B can’t gain electrons. You can’t create electrons out of nothing. If one atom gains electrons, another atom must lose them.