List of top Chemistry Questions on Periodic Trends In Properties Of Elements

Given below are two statements: 
Statement (I): According to the Law of Octaves, the elements were arranged in the increasing order of their atomic number. 
Statement (II): Meyer observed a periodically repeated pattern upon plotting physical properties of certain elements against their respective atomic numbers. 
In the light of the above statements, Choose the correct answer from the options given below:

The correct orders among the following are:  
[A.] Atomic radius : \(B<Al<Ga<In<Tl\) 
[B.] Electronegativity : \(Al<Ga<In<Tl<B\) 
[C.] Density : \(Tl<In<Ga<Al<B\) 
[D.] 1st Ionisation Energy : 
In\(<Al<Ga<Tl<B\) 
Choose the correct answer from the options given below :

Given below are two statements: 
Statement I: $ H_2Se $ is more acidic than $ H_2Te $ 
Statement II: $ H_2Se $ has higher bond enthalpy for dissociation than $ H_2Te $
In the light of the above statements, choose the correct answer from the options given below.