The correct order of increasing electron gain enthalpy with a negative sign for the elements O, S, F, and Cl is :
1. Cl < F < S < O
2. O < S < F < Cl
3. F < S < O < Cl
4. S < O < Cl < F
An element whose IUPAC name is Ununtrium (Uut) belongs to:
1. s-Block elements
2. p-Block elements
3. d-Block elements
4. Inner transition elements .
Which among the following is not a representative element?
1. | Tellurium | 2. | Tantalum |
3. | Thallium | 4. | Astatine |
The period number and group number of "Tantalum" (Z=73) are respectively :
1. | 5, 7 | 2. | 6, 13 |
3. | 6, 5 | 4. | None of the above. |
Consider the following electronic configuration of an element (P) :
The correct statement about element 'P' is :
1. It belongs to the 6th period and the 1st group.
2. It belongs to the 6th period and the 2nd group.
3. It belongs to the 6th period and the 3rd group.
4. None of the above.
The correct statement among the following regarding the element Unununium " is:
1. It is an inner transition element.
2. It belongs to the 8th period in the periodic table.
3. It is a transition element.
4. It is a non-transition element.
The following property/ies decrease from left to right across the periodic table and increase from top to bottom:
(i) Atomic radius (ii) Electronegativity (iii) Ionisation energy (iv) Metallic character
1. | (i) only | 2. | (i), (ii), and (iii) |
3. | (i), (iii), and (iv) | 4. | (i), and (iv) |
The radius of which ion is closest to that of ion ?
1.
2.
3.
4.
The process that requires absorption of energy is:
1.
2.
3.
4.
In alkaline earth metals, the properties, from the following, that will increase from Be to Ba are-
(i) Atomic radius
(ii) Ionisation energy
(iii) Nuclear charge
1. | (i) and (ii) | 2. | (i) and (iii) |
3. | (ii) and (iii) | 4. | (i), (ii), and (iii) |