Aqa A-Level Chemistry - Group 2 Questions With Verified Answers .

AQA A-LEVEL CHEMISTRY - GROUP 2
QUESTIONS WITH VERIFIED ANSWERS .
Increases,,,ANS,-
Trend,in,atomic,radius,down,the,group.,This,trend,is,due,to,more,orbitals,and,a,weaker,nuclear,charge,as,t
he,charge,is,offset,by,the,shielding,that,has,come,about,from,more,orbitals



Increases,,,ANS,-
Trend,in,density,down,the,group.,Due,to,increased,protons,and,neutrons,within,the,nucleus,of,the,eleme
nts



Decreases,,,ANS,-
Trend,in,first,ionisation,energies,down,the,group.,This,is,because,the,electrons,get,further,from,the,nucle
us,so,has,a,weaker,pull,from,the,nucleus



Increases,,,ANS,-
Trend,in,reactivity,with,water,down,the,group.This,is,due,to,the,electrons,being,further,from,the,nucleus,a
llowing,the,interaction,with,other,molecules



Decreases,,,ANS,-
Trend,in,melting,point,down,the,group.,This,is,because,the,delocalised,electrons,are,further,from,the,nucl
eus,as,the,atomic,radius,increases



X(OH)2,+,H2,,,ANS,-The,products,when,an,element,from,group,2,reacts,with,liquid,water:

X,+,2H2O,->,_____,+,__



XO,+,H2,,,ANS,-The,products,when,an,element,from,group,2,reacts,with,steam:

X,+,H2O,->,____,+,__



Increases,,,ANS,-
Trend,in,reactivity,with,water,down,the,group.,This,is,because,the,ionisation,energy,decreases,so,there,ar
e,more,molecules,with,enough,energy,for,a,successful,reaction,due,to,increased,successful,collisions