Question

Identify the element having 6 electrons in valence shell. identify the element with 4s2 3d4 electonic configuration ar 4s1 write the group block and period of this element

Answer 1

I) element having 6 electrons in valence shell is oxygen.
ii) element with electronic configuration 4s2 3d4 is chromium.
iii) 4s1.
group- 1st
block- s block
period- 4th

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