Element 'A' in Gr 17 2nd row 'B' in Gr 16 2nd row ‘C' in Gr 15 2nd

1.	Element 'A' in Gr 17 2nd row 'B' in Gr 16 2nd row ‘C' in Gr 15 2nd rowArrange 'A’, ‘B' and 'C’ in decreasing EN, IE and first EGE.
Answer» In group 17, 2^nd row, element 'A' is F In group 16, 2^nd row, element 'B' is O In group 15, 2^nd row, element 'C' is N Decreasing order of electronegativity (EN) = F > O > N Decreasing order of ionization energy (IE) = F > N > O Decreasing order of electron gain enthalpy (EGE) = F > O > N

Element 'A' in Gr 17 2nd row 'B' in Gr 16 2nd row ‘C' in Gr 15 2nd rowArrange 'A’, ‘B' and 'C’ in decreasing EN, IE and first EGE.

Answer»

In group 17, 2^nd row, element 'A' is F

In group 16, 2^nd row, element 'B' is O

In group 15, 2^nd row, element 'C' is N

Decreasing order of electronegativity

(EN) = F > O > N

Decreasing order of ionization energy

(IE) = F > N > O

Decreasing order of electron gain enthalpy

(EGE) = F > O > N