Question

4 properties of p-block elements? ​

Answer 1

Answer:

1. P block elements are called representative elements because they represent periodic table from right hand side.
2. 17 Grp are calls halogens..means.. salt producers..
3. They form acidic oxides...

Answer 2

Answer:

Characteristic Properties of Elements in p-Block of Modern Periodic Table:

Electronic Configuration

The general valence shell electronic design of p-block elements is ns^2 np^1-6 (with the exception of He). The internal core of the electronic arrangement may although contrast.

The general electronic configuration of Helium is 1s2. Because of their particular electronic configuration p-block elements demonstrate a great deal of variety in properties.

Metallic Character

As stated before p-block contains a wide range of elements i.e. metals, non-metals, and metalloids. The p-block is the main locale of the periodic table to contain metalloids.The nonmetallic character diminishes down the group though there is a progressive increment in non-metallic character from left to right in the p-block. The metallic character tends to increment down every group while it diminishes as we go from left to right over a period. As a matter of fact, the heaviest element in every p-block group is the most metallic in nature.

Atomic Density

The Atomic Density of elements in p-block increments down the group, this is because of increment in the atom's size down the group. Though it diminishes as we move from left to right over the period, this is because of the lessening in nuclear size of all elements in the p-block over the period. Of the considerable number of elements, aluminum is of low density and is generally utilized as a structural material.

Melting and Boiling Points

The Melting and Boiling points slowly increment down the group in light of the fact that the atomic mass increments down the group and thus the intermolecular forces also increase.

In the other sides, the melting point of group 17 and 18 increase as down the group due to stronger intermolecular forces (van der Waals interaction).

Oxidation State

The p-block elements demonstrate a variable oxidation state. The oxidation states increments as we move from left towards right in the periodic table. The greatest oxidation state appeared by a p-block element is equivalent to the aggregate number of valence electrons.

Color

Color of group IIIA elements:

All elements are silvery solids except boron which is brown solid.

Color of group IVA elements:

Carbon: black in color

Silicon and germanium: reddish brown or dull grey or black color

Lead: bluish-white color  

Color of group VA elements:

Nitrogen: colorless

Phosphorus: white and red

Arsenic: yellow and grey solid form

Antimony: amorphous grey form

Bismuth: silvery white

Color of group 16 elements:

Oxygen: is a colorless gas

Sulphur: pale yellow

Tellurium: silvery-white

All the Halogens are colored. They have following colors:

Fluorine: - Pale yellow.  

Chlorine: - Greenish yellow.

Bromine: - Reddish brown.

Iodine: - Violet black.

Noble Gases have following colors:

Helium: Red

Neon: Orange

Krypton: Purple

Xenon: White

Radon: Colorless