What is the chemical properties of halogen?
What is the chemical properties of halogen?
Halogens are nonmetals. At room temperature, fluorine and chlorine are gases and bromine is a liquid. Iodine and astatine are solids. Halogens are very reactive, the reactivity decreases from fluorine to astatine.
What are the chemical and physical properties of halogens?
Group 17: Physical Properties of the Halogens
| Property | F | Br |
|---|---|---|
| color | pale yellow gas | red-brown liquid |
| Density of liquids at various temperatures, /kg m-3 | 1.51 (85 °K) | 3.19 (273 °K) |
| Melting point, /K | 53.53 | 265.8 |
| Boiling point, /K | 85.01 | 331.93 |
What are the properties of Group 17 7a elements?
Lesson Summary
- They are nonmetals, but sometimes astatine can be classified as a metalloid.
- They all have seven valence electrons.
- They tend to form -1 anions and ionic bonds.
- As you go up the group, they become more electronegative.
- They form salts when they bond to metals.
- They’re toxic in their pure form.
- They’re reactive.
Which of the following characteristic can be seen when going down Group 17 in the periodic table *?
First ionization energy decreases down group 17 from top to bottom. Melting point and boiling point increase down Group 17 from top to bottom. Elements become darker in colour going down group 17 from top to bottom. Metallic character of the group 17 elements increases down the group from top to bottom.
What are the physical properties of Group 17 elements?
Physical and Chemical Properties of Group 17 Elements. Group 17 Elements: The Halogens. The elements in Group 17 are: Fluorine Chlorine Bromine Iodine Astatine. These elements are known as halogens. (a) Halogen is a Greek word which means salt-former’.
Why are group 17 elements called halogens?
Group 17 elements are called “halogens” because they give salts when they react with metals. Group 17 elements are very reactive nonmetal. The electronic configuration of the valence shells of these electrons is ns2np5. Thus, in the outermost shell of these elements, the number of electrons is 7.
What are the characteristics of the halogen family?
This article provides information about the characteristics of a group of elements known as halogens. The halogen family comprises a collection of non metallic elements. This series of elements fall under Group 17 of the periodic table of chemical elements.
Which is the most electronegative element in Group 17?
The elements of group 17 have a very high value of electronegativity. The electronegativity decreases down the group due to the decrease in effective nuclear charge. Thus, fluorine is the most electronegative element. Keep visiting BYJU’S to learn more about Halogen family.