metal oxidde reacts
Answers
Answer:
- Oxide, any of a large and important class of chemical compounds in which oxygen is combined with another element. With the exception of the lighter inert gases (helium [He], neon [Ne], argon [Ar], and krypton [Kr]), oxygen (O) forms at least one binary oxide with each of the elements.
Explanation:
Both metals and nonmetals can attain their highest oxidation states (i.e., donate their maximum number of available valence electrons) in compounds with oxygen. The alkali metals and the alkaline earth metals, as well as the transition metals and the posttransition metals (in their lower oxidation states), form ionic oxides—i.e., compounds that contain the O2− anion. Metals with high oxidation states form oxides whose bonds have a more covalent nature. Nonmetals also form covalent oxides, which are usually molecular in character. A smooth variation from ionic to covalent in the type of bonding in oxides is observed as the periodic table is traversed from the metals on the left to the nonmetals on the right. This same variation is observed in the reaction of oxides with water and the resulting acid-base character of the products. Ionic metal oxides react with water to give hydroxides (compounds containing the OH− ion) and resultant basic solutions, whereas most nonmetal oxides react with water to form acids and resultant acidic solutions (see the table
Periodic variation of the properties of oxides of the elements of the third period
group 1 group 2 group 13 group 14 group 15 group 16 group 17
Source: From W. Robinson, J. Odom, and H. Holtzclaw, Jr., Chemistry: Concepts and Models, D.C. Heath and Co., 1992.
reaction of oxides with water and the acid-base character of hydroxides Na2O gives NaOH (strong base) MgO gives
Mg(OH)2 (weak base) Al2O3 nonreacting SiO2 nonreacting P4O10 gives H3PO4 (weak acid) SO3 gives H2SO4 (strong acid) Cl2O7 gives HClO4 (strong acid)
bonding in oxides Na2O ionic MgO ionic Al2O3
ionic
Explanation:
a) since metal oxides are basic in nature ,when they reacting with acid which forms salt and water
b)when metal reacts with acid which forms salt and water
ex:-Zn+2Hcl------>Zncl2+H2
d)antacid helps in preventing excessive Hcl during indigestion