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Finely powdered strontium metal is sufficiently reactive to ignite spontaneously in air. It reacts with water quickly (but not violently like the Group 1 metals) to produce strontium hydroxide and hydrogen gas. Strontium and its compounds burn with a crimson flame and are used in fireworks. Strontiumâs Periodic Table Neighborhood Strontium is a Group 2 Alkaline earth metal. It usually exists as a divalent ion, Sr 2+, in its compounds. Strontiumâs chemistry is very similar to that of calcium, which sits above it in Group 2.
The elements characterized as nonmetals are located in the periodic table at the(1) far left; (2) bottom; (3) center; (4) top right.___ 2.n the Periodic Table of the Elements all the elements within Group VIA have thesame number of (1) valence electrons; (2) energy levels; (3) protons; (4) neutrons.___ 97. Which element in Period 3 has the least tendency to lose an electron? (1) argon;(2) sodium; (3) phosphorus; (4) aluminum.___ 98.