Percentage ionic character, if electronegativity value of X=2.1 & Y=3.0, is :-
1. | 20 | 2. | 30 |
3. | 17 | 4. | 23 |
The correctly matched option is:-
1. : Order of atomic radius
2. O > C > B > N : Order of ionisation energy
3. : Increasing order of Zeff
4. O < N < F < Ne : Order of electron affinity
The group of metals having the positive value of electron gain enthalpy is:
1. | Cr, Fe | 2. | Mn, Zn |
3. | Fe, Zn | 4. | Cr, Mn |
The total number of 3rd period elements with more than one electron in a 3d orbital is:
1. | 9 | 2. | 11 |
3. | 0 | 4. | 8 |
Identify the INCORRECT match.
Name | IUPAC Official Name |
a. Unnilunium | (i) Mendelevium |
b. Unniltrium | (ii) Lawrecium |
c. Unnilhexium | (iii) Seaborgium |
d. Unununnium | (iv) Darmstadtium |
1. | (b)- (ii) | 2. | (c)- (iii) |
3. | (d) -(iv) | 4. | (a)- (i) |
The atomic species that has the maximum ionization energy is :
1. | O- | 2. | S- |
3. | Se- | 4. | Te- |
The outermost electronic configuration of the most electronegative element is :
1. | \(ns^2,np^3\) | 2. | \(ns^2,np^6n-1d^5\) |
3. | \(ns^2,np^5\) | 4. | \(ns^2,np^6 \) |
The increasing order of non-metallic character of the elements N, P, O, and S is:
1. P < S < N < O
2. O < S < N < P
3. O < N < S < P
4. N < S < O < P
The most non-metallic element among the given elements is
1. | Be | 2. | B |
3. | Mg | 4. | Al |
The correct order of metallic character of elements B, Al, Mg and K is :
1. | B > Al > Mg > K
|
2. | Al > Mg > B > K
|
3. | Mg > Al > K > B
|
4. | K > Mg > Al > B |