Na, Mg , Li, Al, Si, F , P and Cl belong to the third period of the Modern periodic table.
Consider the following elements :
Na, Ca, Al, K, Mg, Li
(a) Which of these elements belong to the same period of the periodic table?
(b) Which of these elements belong to the same group of the periodic table?
The first ionistation enthalpies of Na, Mg, Al, and Si are in the order (a) Na< Mg > Al < Si (b) Na> Mg > Al > Si (c) Na< Mg< Al< Si (d) Na> Mg> Al < Si
In modern periodic table; arrange the third row elements Na, Mg, Al and Si in the increasing order of their atomic size:
Question 17 Arrange the following elements in the order of their decreasing metallic character Na, Si, Cl, Mg, Al (a) Cl > Si >Al > Mg >Na (b) Na >Mg >Al >Si > Cl (c) Na > Al > Mg > Cl > Si (d) Al > Na> Si > Ca> Mg
mention the period of the modern periodic table to which the mg and al belongs to? and why?