Which of the following is the most electropositive element?

Which of the following is a normal element?

Identify the correct order of basicity for the following oxides: $Na_2O, MgO, CuO, SiO_2$.

Which one of the following is most basic?

The electronic configuration of an element is $1s^2, 2s^2 2p^6, 3s^2 3p^3$. What is the atomic number of the element which is just below the above element in the periodic table?

Given below are two statements:
Statement $I$ : Both metal and non-metal exist in $p$ and $d-$block elements.
Statement $II$ : Non-metals have higher ionisation enthalpy and higher electronegativity than the metals.
In the light of the above statements,choose the most appropriate answer from the option given below: