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Why is the position of hydrogen not justified in periodic table?
Because hydrogen resembles both Halogens and Alkali Metals.
Which elements are both alkali metals and halogens?
No element is a member of both the halogens and the alkali metals. Hydrogen shares some properties of the two groups, but belongs to neither. It is instead in a group all its own.
Can Hydrogen make bond with alkali metals?
No, hydrogen is a nonmetal. It is grouped with the alkali metals because it has a similar outer shell electron configuration as they do. Hydrogen is something of an oddball among elements. It is rather unique, but share some characteristics with both the halogens and the alkali metals. When the periodic table is divided into groups (noble gasses, halogens, alkali metals, etc.) hydrogen is usually put in its own group.
Why is the position of hydrogen not fixed in the activity series?
Hydrogen shows the properties of both 1st and 7th groups:Resemblance Of Hydrogen With Alkali Metals(Group I-A)Like alkali metals hydrogen has one electron in its valency shell.ExplanationH (Z=1): K1Li (Z=3): K2, L1Na (Z=11): K2, L8, M1(2) Valance shell electronic configuration of hydrogen and alkali metal is same.ExplanationH (Z=1): 1S1Na (Z=11): 1S2,2S2,2P6,3S13) Both hydrogen an alkali metals are good reducing agents.4) Like alkali metals hydrogen can also form halides.Explanation: Hydrogen has capability to form Cation and least electronegative than halogens. For example:Hydrogen: HCl, HI.I-A: NaCl, KBr.Resemblance with Halogens:Both Hydrogen and Halogens require one electron to complete their valence shell.Both hydrogen and Halogens are non-metals (Except iodine which has partial metallic character).Both hydrogen and Halogens acts as negative ions when combined with metals.Their molecules are diatomic.Like Halogens, hydrogen can also form both ionic and covalent bond. Explanation: Hydrogen is least metallic as compared to other 1st group metals. For example:Hydrogen: NaH (ionic), CH4 (Covalent)Halogens: NaCl (ionic), HClHydrogen can receive maximum one electron to complete its octet to form anion and get give oneelectron only to form cation. Therefore cannot be fixed in single group.
Why do halogens form compounds with alkali metals?
Because halogens form negative ions, alkali metals form positive ions; both are reactive elements and an electrostatic attraction exist.
Which group of metals do halogens usually bond with offer an explanation?
For example halogens easily react with alkali metals because both are very reactive; compounds are with ionic bonds.
Why H cannot be placed in group 1a although its electronic configuraion is similar to group 1a?
It is so because it also resembles the the halogens. The enthalpy of bond dissociation of Hydrogen is quite similar to Halogens. Its properties resemble both alkali metals and the halogens but differ from them too. So, it is not placed with any of them.
Why is hydrogen placed in the same group a alkali metals?
Although hydrogen is written above the alkali metals on the periodic table, it is not an alkali metal. It is only placed in that location because it has 1 electron in its outermost s orbital, like the alkali metals. Some tables put hydrogen all by itself above the rest of the table in the middle, with lines running from it diagonally down to both lithium and fluorine, to indicate its ability to either accept or donate a single electron to achieve a filled outer shell. However, it doesn't really belong with the alkali metals or with the halogens.
Classes of elements?
Elements are classified into metals, metalloids, and nonmetals based on their physical and chemical properties. Metals are typically shiny, conduct heat and electricity well, and are malleable. Metalloids have properties that are intermediate between metals and nonmetals. Nonmetals are usually dull in appearance and poor conductors of heat and electricity.
Is fluorine an alkali metal or halogen?
No single element can be both an alkali metal (form +1 cations) and a halogen (form -1 anions).Alkali metals :LithiumSodiumPotassiumRubidiumCesiumFranciumHalogens:FluorineChlorineBromineIodineAstatine
What are the Group 1A and Group 7A elements examples of?
Group 1A elements are alkali metals like sodium and potassium, which are highly reactive and metallic. Group 7A elements are halogens like chlorine and fluorine, which are highly reactive nonmetals.
What due know the position of hydrogen in the periodic table and also write down similarities and dissimilarties with 1 group 4A AND 7A?
Hydrogen is located at the top left of the periodic table in Group 1A. It shares some similarities with Group 1A elements like having one valence electron, but it also shows unique properties such as the ability to bond with both metals and nonmetals, unlike other Group 1A elements. In comparison to Group 4A elements, hydrogen is a nonmetal just like carbon, but it behaves differently in terms of reactivity and bonding properties.
