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General Properties of the Alkali Metals. Various properties of the group 1 elements are summarized in Table \(\PageIndex{1}\). In keeping with overall periodic trends, the atomic and ionic radii increase smoothly from Li to Cs, and the first ionization energies decrease as the atoms become larger.
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Revision notes on Group 1: The Alkali Metals for the AQA GCSE Chemistry syllabus, written by the Chemistry experts at Save My Exams.
The Group 1 elements, also known as the alkali metals, all react vigorously with water to produce an alkaline solution. Part of Chemistry (Single Science) Atomic structure and the...
The alkali metals comprise the elements lithium through francium in group 1 of the periodic table, as shown in Figure 8.3.1. Figure 8.3.1. Position of the alkali metals in the periodic table. Adapted from the periodic table at https://chem.libretexts.org/Bookshelves/General_Chemistry/Map%3A_Chemistry_-_The_Central_Science_ (Brown_et_al.)/02.
The alkali metals react with halogens (group 17) to form ionic halides; the heavier chalcogens (group 16) to produce metal chalcogenides; and oxygen to form compounds, whose stoichiometry depends on the size of the metal atom.
The alkali metals make up Group 1 of the periodic table. This family consists of the elements lithium, sodium, potassium, rubidium, cesium, and francium (Li, Na, K, Rb, Cs, and Fr, respectively). Group one elements share common characteristics. They are all soft, silver metals.
All the Alkali Metals react with water to give a solution of the metal hydroxide and hydrogen gas. For example: 2Na(s) + 2H 2 O(l) 2NaOH(aq) + H 2 (g) For the other metals, you can just change the Na for Li or K or Rb or Cs. The solutions formed (sodium hydroxide and the rest) are all alkaline because ot the presence of hydroxide ions in ...
