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What happens when Group 7 react with Group 1?
The non-metal elements in Group 7 – known as the halogens – get less reactive as you go down the group. This is the opposite trend to that seen in the alkali metals in Group 1 of the periodic table . Fluorine is the most reactive element of all in Group 7.
Why are 1A and 7A so reactive?
Why is Group 7A highly reactive? Having seven valence electrons makes the halogens extremely reactive. Atoms are stable when they have eight valence electrons, so the halogens really want another element’s electrons to make eight.
What are group 1A through 7A elements called?
The Group 1A elements are called alkali metals. The Group 2A elements are called alkaline earth metals. The nonmetals of Group 7A are called halogens.
What happens to the reactivity of Group 1 and Group 7 elements as you go down the group?
As you go down group 1 (the alkali metals) in the periodic table, the elements get more reactive. As you go up group 7 (the halogens), again the elements get more reactive.
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.
Which Group 1 and Group 7 elements would react together most violently?
Why is group 1A reactive?
Elements in the same group of the periodic table have the same number of valence electrons. These are the electrons in their outer energy level that can be involved in chemical reactions. All the elements in group 1 have just one valence electron. This makes them very reactive.
What elements are in Group 7A?
Group 7A (or VIIA) of the periodic table are the halogens: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). The name “halogen” means “salt former”, derived from the Greek words halo- (“salt”) and -gen (“formation”).
Why does Group 7 Get more 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.
Which group 1 and Group 7 elements would react together most violently?
How many valence electrons does a group 7A element have?
The Group 7A elements have seven valence electrons in their highest-energy orbitals (ns 2np 5). This is one electron away from having a full octet of eight electrons, so these elements tend to form anions having -1 charges, known as halides: fluoride, F -; chloride, Cl -, bromide, Br -, and iodide, I -.
What is group 7A used for in chemistry?
Group 7A — The Halogens. Hydrochloric acid is also known as “muriatic acid,” and under this name is often sold with swimming-pool supplies. It is used in the synthesis of organochlorine compounds, the “pickling” of steel and other metals to dissolve scale from their surfaces, and many other uses.
Why are elements in the halogen group placed into groups?
Elements are placed into groups because they share similar properties, and the halogens have quite a few properties in common. So, let’s take a look at some of the properties and trends within this group. All of the halogens have seven valence electrons, which are the electrons farthest from the center of the atom.
Where is astatine found in group 7A?
Group 7A — The Halogens. Astatine is found in trace amounts in some uranium ores, where it is produced as a part of the decay series of uranium and thorium, but since all of its isotopes have fairly short half-lives (the longest, astatine-210, has a half-life of 8 hours), there is not much of this element around.