Amongst the following electronic configurations, the highest ionization energy
is represented by:
1. [Ne]3s23p3
2. [Ne]3s23p2
3. [Ar]3d104s24p3
4. [Ne]3s23p1
The electronic configuration of the most electropositive element is :
1. [He]2s1
2. [Xe]6s1
3. [He]2s2
4. [Xe]6s2
Elements of group I B is called as:
1. | Normal elements. | 2. | Transition elements. |
3. | Alkaline earth metals. | 4. | Alkali metals. |
Element that has the greatest tendency to lose an electron is :
1. | F | 2. | Fr |
3. | S | 4. | Be |
Elements with an electronic configuration 1s2 2s22p6 3s23p63d10 4s24p64d10 5s25p3 belong to the group :
1. | 3rd | 2. | 15th |
3. | 17th | 4. | 2nd |
Those in a group that falls under the law of triads include:
1. Cl, Br, I
2. C, N, O
3. Na, K, Rb
4. H, O, N
All the non-metals in the long form of the periodic table are placed under:
1. s-Block
2. p-Block
3. f-Block
4. d-Block
The statement that is incorrect for the periodic classification of elements is:
1. | The properties of elements are a periodic function of their atomic number. |
2. | Non-metallic elements are lesser in number than metallic elements. |
3. | The first ionization energies of elements along a period do not vary in a regular manner with an increase in atomic number. |
4. | For transition elements, the d-subshells are filled with electrons monotonically with an increase in atomic number. |
Which among the following options is a nonmetal?
1. | Gold | 2. | Mercury |
3. | Scandium | 4. | Selenium |
An example of metalloid elements in the periodic table is:
1. | Na and K | 2. | Cu and Al |
3. | As and Si | 4. | Ca and Mg |