Which of the following elements would lose an electron easily?
(a) Mg (b) Na (c) K (d) Ca
The atomic numbers of the elements Na, Mg, K and Ca are 11, 12, 19 and 20 respectively. The element having the largest atomic radius is :
Element X forms a chloride of formula XCl4 which is solid with a low melting point. X would most likely belong to the same group in the periodic table as that of