Chemistry
Arrange the following
(a) Elements of group 1, in increasing order of reactivity.
(b) Elements of group 17, in decreasing order of reactivity.
(c) He, Na, Mg (decreasing order of valency).
(d) Chlorine, sodium, magnesium (increasing reducing character).
Related Questions
Name the gas used in
(a) filling balloons
(b) light bulbs
(c) bright coloured advertising light works
(a) Name the method by which alkali metals can be extracted.
(b) What is the colour of the flame of sodium and potassium?
Element P has atomic number 19. To which group and period, does P belong? Is it a metal or a non-metal? Why?
An element belongs to the 3rd period and Group IIIA (13) of the periodic table. State
(a) the number of valence electrons,
(b) the valency,
(c) if it is a metal or non-metal?
(d) the name of the element.