Answer: noble gases
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elements in group 1A are known as _________
The alkali metals consist of the chemical elements lithium (Li) sodium (Na) potassium (K) rubidium (Rb) caesium (Cs) and francium (Fr). Together with hydrogen they constitute group 1 which lies in the s-block of the periodic table. All alkali metals have their outermost electron in an s-orbital: this shared electron configuration results in their having very similar characteristic properties. Indeed the alkali metals provide the best example of group trendsin properties in the periodic table with elements exhibiting well-charact…
Sun Sep 15 2002 14:30:00 GMT-0400 (Eastern Daylight Time) · a Group 1 is composed of hydrogen (H) and the alkali metals. Elements of the group have one s-electron in the outer electron shell. Hydrogen is not considered to be an alkali metal as it is not a metal though it is more analogous to them than any …
Group 2A — The Alkaline Earth Metals
The Parts of the Periodic Table - Angelo State University
Sat May 12 2012 14:30:00 GMT-0400 (Eastern Daylight Time) · Sodium potassium rubidium caesium barium platinum gold The common notions that "alkali metal ions (group 1A) always have a +1 charge" and that "transition elements do not form anions" are textbook errors. The synthesis of a crystalline salt of the sodium anion Na − was reported in 1974.
The periodic table also known as the periodic table of elements is a tabular display of the chemical elements which are arranged by atomic number electron configuration and recurring chemical properties.The structure of the table shows periodic trends.The seven rows of the table called periods generally have metals on the left and nonmetals on the right.
This is a list of the 118 chemical elements which have been identified as of 2021. A chemical element often simply called an ...
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