Correct Order is :-
(A) Ne>`Ne^+`
B) F< O (`I.E_2`)
C) Mn>Cr(`I.E_2`)
D) N>F (`I.E_1`)

The order of reactivity of halogens is (A) F>Cl>Br>I (B) F (C) F Br (D) F I

The correct order of the size of Be , C , F and Ne is

Which one of the following indicates the correct order of atomic size? (1). C gt F gt Ne" "(2) Be lt C lt F lt Ne (3). Be gt C gt F" "(4) F gt Ne gt Be gt C

If A B C and D E F are two triangles such that (A B)/(D E)=(B C)/(E F)=(C A)/(F D)=2/5 , then A r e a( A B C): A r e a( D E F)= 2:5 (b) 4: 25 (c) 4: 15 (d) 8: 125

Predict from each set, the atom/ion which has the greatest IE_(1) with explanation: a. Cl or F , b. S or Cl c. Ar or K , d. Xe or Kr e. O or N , f. Na^(o+) or Na g. Be^(o+) or Mg^(2+) , h. I^(ɵ) or I i. B or C , j. Ne or F k. N, O,F l. P,Ar,Mg m. B,Al,Ga

Among second period elements, the correct order of first ionisation enthalpy is : 1 Li 2 Li 3 Li > Be > B > C > N > O > F > Ne 4 Li > B > C > Be > O >N > F > Ne