| List-I (Block/group in periodic table) |
List-II (Element) |
||
| A. | Lanthanoid | I. | Ce |
| B. | d-Block element | II. | As |
| C. | p-Block element | III. | Cs |
| D. | s-Block element | IV. | Mn |
Identify the incorrect match:
| Name | IUPAC Official Name | ||
| (a) | Unnilunium | (i) | Mendelevium |
| (b) | Unniltrium | (ii) | Lawrecium |
| (c) | Unnilhexium | (iii) | Seaborgium |
| (d) | Unununium | (iv) | Darmstadtium |
| 1. | (b)-(ii) | 2. | (c)-(iii) |
| 3. | (d)-(iv) | 4. | (a)-(i) |
Match Column-I with 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) |
Which of the following ionic species is isoelectronic with \(\mathrm{Be^{2+}}\)?
| 1. | 2. | ||
| 3. | 4. |
| 1. | Sodium(Na) | 2. | Oxygen(O) |
| 3. | Fluorine(F) | 4. | Nitrogen(N) |
Match List-I (Elements) with List-II (Atomic radii (pm)):
| List-I Elements |
List-II
Atomic radii (pm)
|
||
| (a) | Oxygen (\(O\)) | (i) | 88 |
| (b) | Carbon (\(C\)) | (ii) | 74 |
| (c) | Boron (\(B\)) | (iii) | 66 |
| (d) | Nitrogen (\(N\)) | (iv) | 77 |
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (i) | (iv) | (iii) |
| 2. | (iv) | (iii) | (ii) | (i) |
| 3. | (i) | (iv) | (iii) | (ii) |
| 4. | (iii) | (iv) | (i) | (ii) |
The species Ar, K+ and Ca2+ contain the same number of electrons. In which order do their radii increase?
1. Ar < K+ < Ca2+
2. Ca2+ < Ar < K+
3. Ca2+ < K+ < Ar
4. K+ < Ar < Ca2+
The correct order of ionic radii is:
1.
2.
3.
4.