I dunno which one it is could someone help please?
2 answers:
You might be interested in
Explanation:
<em>First</em><em> </em><em>two</em><em> </em><em>pictures</em><em> </em><em>go</em><em> </em><em>together</em>
From top to bottom, <em>ionisation energy</em> <em>decreases</em><em> </em>[electron shielding], while from left to right, ionisation energy <em>increases</em><em> </em>[valence shell stability]. Noble gases always always possess such high energy of ionisation because they are stable, with Helium having the highest ionisation of all elements.
From top to bottom, <em>electron affinity</em> <em>decreases</em> [decrease in atomic radius], while from left to right, electron affinity <em>increases</em><em> </em>[increase in atomic radius].
There are many more trends, but I have ran out of space, so I will put this in the comments.
I am joyous to assist you anytime.
