The unknown element named as ‘eka-aluminium' by Mendeleev, was named as --- in the modern periodic table?
AGermanium
BScandium
CGallium
DBoron
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Related Questions:
At present, _________ elements are known, of which _______ are naturally occurring elements.
Mendeleev's Periodic Law states that?
A radioactive rare gas is
Consider the statements below and identify the correct answer.
- Statement-I: Modern periodic table has 18 vertical columns known as groups.
- Statement-II: Modern periodic table has 7 horizontal rows known as periods.
ചരിത്രത്തിൽ ആദ്യമായി മൂലകങ്ങളെ വർഗ്ഗീകരിച്ച് ആവർത്തനപട്ടിക തയ്യാറാക്കിയ ശാസ്ത്രജ്ഞൻ