Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions

Give reason for the following : a) Ions are more stable than atoms. b) Noble gases show low reactivity. c) An atom is electrically neutral.



A.. Noble gas has closed valence shell. Thus they are stable and do not show any reactivity.

b.. in an atom there are equal number of protons and electrons. So the positive charges of protons are balanced by the equal number of electrons. Thus atom is neutral.

c.. RChemical property is determined by number of electron (in outermost shell) isotopes have equal number of protons (and equal number of electrons). thus they show same chemical properties.

d.. ions loose electron to attain nearest noble gas electronic configuration , and become stable. But atoms does not have filled valence shell. Thus ions are more stable than atoms.

e.. 11Na+ : number of electrons is (11-1)= 10
electronic configuration
K shell : 2electrons (filled),
L shell : 8electrons (filled)
So from electronic configuration we can see Na+ has filled in K and L shell.
0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts