a. metalloids b. metals c. liquids d. nonmetals Types of Elements in the Periodic Table: The periodic table is an arrangement of elements into various horizontal rows called periods and vertical columns called groups in the increasing order of their ...
Which of these elements has seven valence electrons? a. Mg b. Li c. Al d. S e. Cl What are the first 20 elements of periodic table (group wise)? What family on the periodic table of elements has a full outer electron shell?
When freshly cut, lead is silvery with a hint of blue; it tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable element and three of its isotopes are endpoints of major nuclear decay chains of heavier elements. Lead is a relatively un...
These compounds may also be generally designated as the sulfides, selenides or tellurides of the acyloxyaromatic (or aroxyacyl) carboxylic acids, preference being given to such compounds in which the acyl group corresponds to an oxy inorganic acid (such as phosphorous acid). In other words, ...
(a) ns2np5 (b) ns2 (c) ns2np6 (d) ns2np2.Noble Gas:Noble gases are the eighteen group elements of the modern periodic table. Normally, they are used for witting the electronic configuration of other elements because the elements of ideal gas ...