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The most reactive metals, such as sodium, will react with cold water to produce hydrogen and the metal hydroxide: 2 Na (s) + 2 H 2 O (l) →2 NaOH (aq) + H 2 (g) Metals in the middle of the reactivity series, such as iron , will react with acids such as sulfuric acid (but not water at normal temperatures) to give hydrogen and a metal salt ...
The alkali metals are among the most electropositive elements on the periodic table and thus tend to bond ionically to the most electronegative elements on the periodic table, the halogens (fluorine, chlorine, bromine, iodine, and astatine), forming salts known as the alkali metal halides. The reaction is very vigorous and can sometimes result ...
The alkaline earth metals (Be, Mg, Ca, Sr, Ba, and Ra) are the second most reactive metals in the periodic table, and, like the Group 1 metals, have increasing reactivity with increasing numbers of energy levels. Beryllium (Be) is the only alkaline earth metal that does not react with water or steam, even if the metal is heated red hot. [9]
Platinum is one of the least reactive metals. It has remarkable resistance to corrosion, even at high temperatures, and is therefore considered a noble metal. Consequently, platinum is often found chemically uncombined as native platinum.
Most of the chemistry has been observed only for the first three members of the group (the chemistry of dubnium is not very established, but what is known appears to match expectations for a heavier congener of tantalum). All the elements of the group are reactive metals with a high melting points (1910 °C, 2477 °C, 3017 °C).
Lithium (Li) is the lightest metal and the least dense solid element. [8] In its non-ionized state it is one of the most reactive elements, and so is only ever found naturally in compounds. It is the heaviest primordial element forged in large quantities during the Big Bang. Beryllium (Be) has one of the highest melting points of all the light ...
Antimony forms antimonides with metals, such as indium antimonide (InSb) and silver antimonide (Ag 3 Sb). [36] The alkali metal and zinc antimonides, such as Na 3 Sb and Zn 3 Sb 2, are more reactive. Treating these antimonides with acid produces the highly unstable gas stibine, SbH 3: [37] Sb 3− + 3 H + → SbH 3
A number of interhalogens, such as IF 7, react with all metals except for those in the platinum group. IF 7, unlike interhalogens in the XY 5 series, does not react with the fluorides of the alkali metals. [1] ClF 3 is the most reactive of the XY 3 interhalogens. ICl 3 is the least reactive.