What is the shortcut to know the group and period number of an element with high atomic number
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with the valence elrctrons we get to khow about group no.
valence electrons=1 then group no.=1
and no. of shells tells period no.
valence electrons=1 then group no.=1
and no. of shells tells period no.
ScriptedMath:
What if valence electrons is 3?
from 3 onwards 10 is added
that means group no. is 13
But scandium with atomic number 21 and valence electron 3 is in the 3rd group
this is not applied on transition elements
What about elements with high atomic number
Like 100,109 etc
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