Page 5 soz not soz skipped 4 Flashcards
How do you calculate atomic radius?
Measure the distance between the nucleus of 2 bonded atoms and then halve it
What is the atomic radius recorded in
pm (haha not time)
What are the trends on the PT for atomic radius?
Left to right atom gets smaller, top to bottom atom gets bigger
Why is the sodium ion smaller than the sodium atom?
When an atom becomes an ion it either looses or gains an neutron. Sodium looses a proton and therefore the ion is smaller than the atom
What is the effective nuclear charge?
Attraction to the nucleus
What is the first ionisation energy?
The energy required to pull off the first electron
What is the periodic trend for ionisation energy?
Left to right increases top to bottom decreases
What is electronegativity?
The measure of an atom’s attraction for another atom’s electron (horny much)
What are the units for electronegativity?
Paulings
What kind of electronegativity level do metals have?
Generally low ones as they give electrons not steal
What kind of electronegativity level do non-metals have?
Very high as they gain electrons
What is the periodic trend for electronegativity?
Left to right increases, top to bottom decreases
What is the electronegativity for noble gasses?
NUDDA
What does Have No Fear Of Ice Cold Beer mean?
Hydrogen, Nitrogen, Flourine, Oxygen, Iodine, Chlorine, Bromine
What is the rule of thumb for displacement reactions?
Most reactive substances end up in solution
