Table of Contents
- 1 Is group 7 a compound?
- 2 Why does the chemical reaction between group 1 and group 7 or group 17 elements readily happen?
- 3 Why is group 7 so reactive?
- 4 What is special about group 1 in the periodic table?
- 5 Why do group 1 elements have similar reactions?
- 6 What happens when group 1 metals react with group 7?
- 7 What are the names of the group 7 elements?
- 8 What are the compounds of the Group 1 elements?
Is group 7 a compound?
The Group 7 elements are called the halogens. They are placed in the vertical column, second from the right, in the periodic table . Chlorine, bromine and iodine are the three common Group 7 elements….Properties and uses of the halogens.
| Element | Properties | Typical use |
|---|---|---|
| Iodine | Grey solid | Sterilising wounds |
What are Group 1 and 7 elements called?
Group 7A — The Halogens
| 1A | ||
|---|---|---|
| (1) | ||
| 7B | ||
| (7) | ||
| 1 | H |
Why does the chemical reaction between group 1 and group 7 or group 17 elements readily happen?
They have high ionization energies and form the most electronegative group of elements. Their electron configuration, ns2np5, allows them to easily react with Group 1 and 2 metals; each halogen tends to pick up one electron, and the Group 1 and Group 2 elements each tend to lose one or two electrons, respectively.
In what ratio will Group 1 and group 7 elements combine?
Ionic compounds are neutral, so the total positive charge has to equal the total negative charge. The combining ratio for alkali metals and halogens is 1:1 .
Why is group 7 so reactive?
The group 7 elements want to gain one more electron so that they have a stable electronic structure. The smaller the atom, the easier it is to grab an electron from another atom, making the atom more reactive. As you go down group 7, the atomic radius increases and it becomes more difficult to attract another electron.
Why are group 1 called alkali metals?
Why are they called the alkali metals? The alkali metals are so named because when they react with water they form alkalies. Alkalies are hydroxide compounds of these elements, such as sodium hydroxide and potassium hydroxide.
What is special about group 1 in the periodic table?
The Group 1 elements are called the alkali metals. They are placed in the vertical column on the left-hand side of the periodic table . All the Group 1 elements are very reactive . Group 1 elements form alkaline solutions when they react with water, which is why they are called alkali metals.
How does the reactivity down group 1 and 7 differ and how is this related to the atomic radius of these elements?
As you go down the group its easier to react. Metals are shiny and lustrous elements and they get softer as you go down the group because the electrons are further from the nucleus meaning the atomic radius increases.
Why do group 1 elements have similar reactions?
The Group 1 elements have similar properties because of the electronic structure of their atoms – they all have one electron in their outer shell.
Why do group 1 and 7 react so easily?
Group 1 elements get more reactive down the group becasue with each step down the group the number of full electron rings increases by 1 and the outermost electron is further away from the positive nucleus.
What happens when group 1 metals react with group 7?
When the alkali metals react with the different halogens (Group 7 of the periodic table), the group of compounds formed are known as the alkali metals halides. All alkali metal halides are white solids. Note that all the halogens are toxic, and so these reactions should be carried out in a fume cupboard.
How are Group 1 and 7 mostly form of?
Group 1 elements have “spare” electron. Group 7 elements require an electron (to fill the outside electron shell). Therefore an electron is transferred from the group 1 element to the group 7 element forming a compound held together by an electrovalent bond. Hope this helps. Group 1 elements have “spare” electron.
What are the names of the group 7 elements?
Chlorine, bromine and iodine are the three Group 7 elements you are likely to see at school. Fluorine is too reactive to keep or produce safely at school. Group 1 elements form salts when they react with metals, which is why they are called the halogens (‘salt formers’).
What happens when Group 7 reacts with Group 1?
The group 7 elements react vigorously with group 1 elements such as sodium and potassium. In each case, a metal halide is formed (fluoride, chloride, bromide or iodide).
What are the compounds of the Group 1 elements?
SOME COMPOUNDS OF THE GROUP 1 ELEMENTS This page looks at some compounds of the Group 1 elements (lithium, sodium, potassium, rubidium and caesium) – limited to various bits and pieces required by various UK A level syllabuses. You will find some information about the nitrates, carbonates, hydrogencarbonates and hydrides of the metals.