What does S stand for on the periodic table?
(a) How does the chemical reactivity of alkali metals vary on going down in group 1 of the periodic table?
(b) How does the chemical reactivity of the halogens vary on going down in group 17 of the periodic table?
What does the symbol 'N' stand for in the periodic table?
what does first and second series mean in mendeleevs periodic table and what does A and B in the groups of mendeleeves periodic table mean??
WHAT DOES A AND B REPRESENT IN THE MANDELEEVS PERIODIC TABLE?/
What does the word 'Period' signify in the periodic table?