In Mendeleev’s Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the periodic table later ? [NCERT Exemplar Problems]
(a) Germanium
(b) Chlorine
(c) Oxygen
(d) Silicon
In Mendeleev’s Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the periodic table later ? [NCERT Exemplar Problems]
(a) Germanium
(b) Chlorine
(c) Oxygen
(d) Silicon