[Answer] Which metal in Period 5 is very reactive and has two valence electrons in each atom?

Answer: strontium (Sr)

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Which metal in Period 5 is very reactive and has two valence electrons in each atom? Tue Dec 24 2002 · Rubidium is the first element placed in period 5. It is an alkali metal the most reactive group in the periodic table having properties and similarities with both other alkali metals and other period 5 elements. The number of valence electrons in an atom governs its bonding behavior. Therefore elements whose atoms can have the same number of valence electrons are grouped together in the periodic table of the elements.. The most reactive kind of metallic element is an alkali metal of group 1 (e.g. sodium or potassium); this is because such an atom has only a single valence electron; during the ... Beryllium is a chemical element with the symbol Be and atomic number 4. It is a relatively rare element in the universe usually occurring as a product of the spallation of larger atomic nuclei that have collided with cosmic rays.Within the cores of stars beryllium is depleted as it is fused into heavier elements. It is a divalent element which occurs naturally only in combination with other ... Period 2 element - Wikipedia Valence electron - Wikipedia Period 2 element - Wikipedia Valence electron - Wikipedia Sun Mar 11 2001 · The halogens (/ ˈ h æ l ə dʒ ə n ˈ h eɪ- -l oʊ- -ˌ dʒ ɛ n /) are a group in the periodic table consisting of ...

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