By considering their position in the Periodic Table, which one of the following elements would you expect to have maximum metallic characteristic?

Calcium (Ca) and strontium (Sr) are expected to show chemical reactions similar to magnesium (Mg). This is because the number of valence electrons (2) is same in all these three...

(a) Lithium (Li), sodium (Na), and potassium (K) have a single electron in their outermost shells. (b) Magnesium (Mg) and calcium (Ca) have two electrons in their outermost shells. (c) Neon (Ne),...

The metallic character of elements decreases from left to right across a period. Thus, the metallic character of Mg is more than that of Al. The metallic character of elements...

The non-metallic character of elements increases from left to right across a period. Thus, the decreasing order of non-metallic character is F > N > C > B. Again, the...

There are 18 groups and 7 periods in the Modern Periodic Table. (a) * Atomic size increase      *  Metallic character increases (b) * Atomic size decreases       * Metallic character decreases

(a) Sodium (Na) Group 1 and Period 3 or Potassium (K) Group 1 and Period 4 (b) Phosphorus (P) Group 15 and Period 3 (c) Carbon (C) Group 14 and Period 2 (d) Helium (He) Group...

(i) excrete small amount of urine. (iii) excrete concentrated urine.

Mendeleev’s Periodic Table Modern Periodic Table Mendeleev's periodic table is based on atomic mass. Elements are arranged in increasing order of their atomic masses. Modern periodic table is based on atomic number. Elements are arranged...

(i) Metals lie on the left-hand side of the Periodic table whereas non-metals are found on the right-hand side. The element A is in group 17. Group 17 is on...

Mendeleev’s periodic table                                      Modern periodic table.                ...