Which of the following elements replaced eka-Aluminium in Mendeleev's Periodic table?
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Except Helium, all noble gases have how many electrons in the outermost shell?
Which of the following is called Aurum?
The maximum number of electrons that can be accommodated in M shell is
The most active ingredient in bleaching powder is
How many atoms will one mole of Carbon (C-12) contain?
What is the atomicity of Phosphorous?
Sphalerite is an ore/mineral of
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