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 perioidc table later
(a) Germanium
(b) Chlorine
(c) Oxygen
(d) Silicon

NCERT Class X
Science - Exemplar Problems

Chapter_Periodic Classification of Elements

1

Answers

2015-05-30T09:50:35+05:30
Germainum and siulicom (ekasilicon, ekaaluminium respecctively

0