Heaviest element of periodic

Densest element of the periodic table is

Consider the elements of period 2 in the modern periodic table. Answer the following questions with explanation. Which is the most electropositive element in this period?

Properties of elements are periodic function of their

The lightest element in the periodic table is

Name the (i) lightest and the (ii) heaviest element (in terms of density)among the transition elements.

Mendleeve left the space for elements in periodic table, the elements are "_________"

Mendleev left the space for elements in periodic table for the elements:

The elements of a period of the periodic table are given below in order from left to right with one of its element missing: Na Mg Al Si S Cl Ar . (a) To which period do these elements belong? (b) One element of this period is missing. Which is the missing element and where should it be placed? (c) Which one of these elements in this period shows the property of catenation? (d) Which one of these elements is least reactive? (e) Identify the halogen from this period.