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प्रश्न
Name the non-metals in the first twenty elements.
एक पंक्ति में उत्तर
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उत्तर
C, N, O, F, Ne, P, S, Cl, Ar, H and He.
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संबंधित प्रश्न
In the Modern Periodic Table, which are the metals among the first ten elements?
What is meant by a group, in a periodic table?
How does the chemical reactivity of the halogens vary on going in group 17 of the periodic table?
What is the number of valence electrons in the atoms of first elements in a period?
What is a period in a periodic table?
What is the number of elements is 1st period the modern periodic table?
Define:
Periodic table
Name two elements in each case: Lanthanides
Name the noble gas with 3 shells.
Name the metalloids in the first twenty elements.
