An element X has the 4th shell as the valence shell. If the difference in the number of electrons between K and N shells and between L and M shells is zero, then the atomic number of the element X will be
A 12
B 10
C 2
D 20
it would be (d) because if 4 shells are present in an atom then rest of the answers don't make sense !!!!
Ans 3:
Class : Class 9
ANS will be D as difference between 1st and 4th shell = 0 stating it has 2 valence electrons and difference between 2nd and 3rd shell is also 0,stating 2nd and 3rd shell have 8 electrons if you get time pls solve my forum questions thanks