അലസവാതകങ്ങളിൽ ഉൾപ്പെടാത്തതാണ് :
Aഹീലിയം
Bആർഗോൺ
Cക്രിപ്റ്റോൺ
Dഹൈഡ്രജൻ
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Related Questions:
ആവർത്തനപ്പട്ടികയിലെ പീരിയഡുകളുടെ എണ്ണം?
The most abundant rare gas in the atmosphere is :
Modern periodic table was prepared by
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.
From total __________elements. __________elements were discovered through laboratory processes?