March Holiday Assignment: Question 11

Charrisa wrote:11b) Write the electron arrangement in the outer shell of R.
ans: ns^2 np^3
-Whys is the answer ns^2 np^3? What does n stands for?

n means that it can be any thing with s^2p^3.. eg.. 1s2 2s2 2p3, or 1s2 2s2 2p6 3s2 3p3.. as long as outer most shell is s2p3... get it?

11c) Can R be nitrogen? Explain.
ans: R cannot be nitrogen because nitrogen only has 7 inonisation energies but the diagram shows that R has at least 8 ionisation energies.
-How do i show that nitrongen has 7 ionisation energies?

N has 7 electrons, so to remove all, u must have 7 IE...

11d)Explain why ionisation energy increases as electrons are removed.
ans: Ionisation energy increases as electrons are removed because the remaining electrons are attraced more strongly by the constant positive charges on the nucleus
-Why are the remaining electrons attracted more strongly since there the positive charge is always constant?

[i]it is because the remaining electrons, which are getting lesser and lesser, will be attracted more strongly by the protons.. for eg. i start off with 10 p and 10 e. after 1st IE, i am left with 10 p and 9 e, after 2nd IE i am left with 10 p and 8 e.. so the remaining electrons experience a greater pull towards the nucleus..[/i]