6. How are alkali metals different from noble gases? Ans.Alkali metals have a single electron on their outer shell, while all the noble gases (the Group 8 elements in the periodic table including helium, neon, argon) have a full valence band with no unpaired electron to cause a reaction ...
Periodic table, in chemistry, the organized array of all the chemical elements in order of increasing atomic number. When the elements are thus arranged, there is a recurring pattern called the ‘periodic law’ in their properties, in which elements in t
Alkali and Alkalinse earth metals 2 Transition Metals More so than any of the other major groups of elements in the periodic table, the transition metals have shaped human history and have been the workhorses of industry. The discover...
第1族:氢 + 碱金属(Alkali Metals);碱金属:锂,钠,钾,铷,铯,钫 / Li, Na, K, Rb, Cs, Fr 第2族:碱土金属(Alkaline Earth Metals);碱土金属:铍,镁,钙,锶,钡,镭 / Be, Mg, Ca, Sr, Ba, Ra 第3族:稀土金属(Rare Earth Metals)+ 锕系元素;稀土金属:钪,钇,镧系元素 / Sc, Y, the lan...
The Periodic Table Chemistry Group 1 - Alkali Metals Chemistry Group 7 - Halogens Try the freeMathway calculator and problem solverbelow to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations. ...
Alkali Metals: Group 1 elements; highly reactive with one outer electron. Alkaline Earth Metals: Group 2 elements; less reactive with two outer electrons. Transition Metals: Central block elements, multiple oxidation states, good conductors.
softsolidswhichcanbecutwithaknife.CompanyLogo IntroductionARussianchemist,Mendeleyev,arranged theelementsinorderofincreasingatomic massLeftgapsinhistableandpredictedthreeunknownelements:gallium（镓）,scandium,germanium（钪和锗）CompanyLogo Modernperiodictable ItisanextendedformofMendeleev’soriginaltable....
Explore the Periodic Table in a clear and interactive view. Hover over the groups, see the atomic numbers, view the symbols and more!
Periodic Table Click on an element for more information 1 18 H 2 13 14 15 16 17 He Li Be B C N O F Ne Na Mg 3 4 5 6 7 8 9 10 11 12 Al Si P S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br
In this article, we'll break down everything you need to know about the periodic table. From its history and layout to its key elements and groups