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) |
Match the element in Column I with that in Column II.
Column-I | Column-II | ||
(a) | Copper | (i) | Non-metal |
(b) | Fluorine | (ii) | Transition metal |
(c) | Silicon | (iii) | Lanthanoid |
(d) | Cerium | (iv) | Metalloid |
(a) | (b) | (c) | (d) | |
1. | (ii) | (iv) | (i) | (iii) |
2. | (ii) | (i) | (iv) | (iii) |
3. | (iv) | (iii) | (i) | (ii) |
4. | (i) | (ii) | (iii) | (iv) |
Among the elements Ca, Mg, P and Cl, the correct order of increasing atomic radii is:
1. Cl < P < Mg < Ca
2. P < Cl < Ca < Mg
3. Ca < Mg < P < Cl
4. Mg < Ca < Cl < P
The value of electron gain enthalpy of Na+, if IE1 of Na = 5.1 eV, is:
1. +10.2 eV
2. –5.1 eV
3. –10.2 eV
4. +2.55 eV
Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species?
1. F < Cl < O < S
2. S < O < Cl < F
3. O < S < F < Cl
4. Cl < F < S < O
In which of the following molecule, the internuclear distance will be maximum:
1. CsI
2. CsF
3. LiF
4. LiI
The first ionization potential of Be and B will be:
1. 8.8 and 8.8
2. 6.6 and 6.6
3. 6.6 and 8.8
4. 8.8. and 6.6
An electronic configuration that has maximum difference between II and III ionization potential is:
1. 1s2 2s2 2p6 3s1
2. 1s2 2s2 2p6 3s2
3. 1s2 2s2 2p6
4. 1s2 2s2 2p5
Ionic radii are:
1. | Inversely proportional to the square of effective nuclear charge. |
2. | Directly proportional to the effective nuclear charge. |
3. | Directly proportional to the square of effective nuclear charge. |
4. | Inversely proportional to the effective nuclear charge. |
Incorrect order among the following is:
1. | NH3 < PH3 < AsH3 – Acidic |
2. | Li < Be < B < C – Ist Ionization potential |
3. | Al2O3 < MgO < Na2O < K2O - Basic |
4. | Li+ < Na+ < K+ < Cs+ - Ionic radius |