Using the part of the Periodic Table given below, answer the questions that follow: (i)Na has physical and chemical properties similar to which element (s) and why? (ii) Write the electronic configuration of N and P. Which one of these will be moreelectronegative and why?(iii) State a chemical property common to fluorine and chlorine.

Using the part of the Periodic Table given below, answer the questions

1.	Using the part of the Periodic Table given below, answer the questions that follow: (i)Na has physical and chemical properties similar to which element (s) and why? (ii) Write the electronic configuration of N and P. Which one of these will be moreelectronegative and why?(iii) State a chemical property common to fluorine and chlorine.
Answer» Solution : (i) Lithium and potassium, due to same number of valence ELECTRONS. (ii) `N to 2, 5` `P to 2,8,5` N is more ELECTRONEGATIVE element as electronegativity decreases on MOVING down thegroup. (iii) Both fluorine and chlorine form their hydracids on REACTING with hydrogen. `H_2 + F_2 to 2HF` `H_2 + Cl_2 to 2HCl`