The group number that has non-metal, liquid as well as gas at room temperature, is -
1. | 15 | 2. | 14 |
3. | 18 | 4. | 17 |
Elements | |||
I | 520 | 7300 | -60 |
II | 419 | 3051 | -48 |
III | 1681 | 3374 | -328 |
IV | 1008 | 1846 | -295 |
V | 2372 | 5251 | +48 |
VI | 738 | 1451 | -40 |
Incorrect statement among the following is :
1. | The p-block has 6 columns because a maximum of 6 electrons can occupy all the orbitals in a p-shell. |
2. | The d-block has 8 columns because a maximum of 8 electrons can occupy all the orbitals in a d-subshell. |
3. | Each block contains a number of columns equal to the number of electrons that can occupy that subshell. |
4. | The s- block contains mainly reactive metals. |
Among the following elements, the one that is not an actinoid is:
1. | Curium (Z=96) | 2. | Californium (Z=98) |
3. | Uranium (Z=92) | 4. | Terbium (Z=65) |
The order of screening effect of electrons of s, p, d and f orbitals of a given shell of an atom on electrons in its outer shell is :
1. s > p > d > f
2. f > d > p > s
3. p < d < f < s
4. f > p > s > d
Among halogens, the correct order of amount of energy released in electron gain (electron gain enthalpy) is-
1. | F > Cl > Br > I | 2. | F < Cl < Br < I |
3. | F < Cl > Br > I | 4. | F < Cl < Br > I |
The period number in the long form of the periodic table is equal to :
1. | Magnetic quantum number of any element of the period. |
2. | Atomic number of any element of the period. |
3. | Maximum principal quantum number of any element of the period. |
4. | Maximum azimuthal quantum number of any element of the period. |
The elements in which electrons are progressively filled in 4f-orbitals are called:
1. | Actinoids | 2. | Transition elements |
3. | Lanthanoids | 4. | Halogens |
The correct order of size of the given species is:
1. I > I- > I+
2. I+ > I- > I
3. I > I+ > I-
4. I- > I > I+
The outermost electronic configuration of the last element of the p-block in the 6th period is represented by:
1.
2.
3.
4.