What is the most common oxidation number for calcium? Explain.?

Answer 1

Calcium is a group 2 element and is always +2. It has 2 electrons. It needs eight for a full, stable, valence shell. It is easier for calcium to lose the two electrons than gain six. Loss of the 2 electrons leads to a positive charge of 2.

Answer 2

Oxidation Number For Calcium

Answer 3

Calcium Oxidation Number

Answer 4

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What is the most common oxidation number for calcium? Explain.?

Answer 5

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Groundwater chemically weathers rock by a number of processes: CARBONATION - the process by which dissolved carbon dioxide in rainwater or in moisture in the surrounding air forms carbonic acid and reacts with the minerals in the rock. This process weakens the rock thus breaking it down in the process. This is also applicable to other acids, including sulphuric acid resulting from acid rain or volcanic activity or sulphide mine drainage, or to humic acid resulting from the decay of organic material HYDROLYSIS - the chemical reaction between the minerals in the rock and hydrogen in rain water. For example, during hydrolysis, the feldspar in granite changes to clay minerals which crumble easily, weakening the rock and causing it to break down. OXIDATION - the process by which oxygen combine with water and minerals in the rock such as calcium and magnesium. When iron reacts with oxygen, reddish -brown iron oxide is formed. The iron-oxide crust crumbles easily and weakens the rock. SOLUTION - the process by which water soluble minerals in the rocks dissolve directly in water. HYDRATION process where minerals in the rock absorb water and expand, creating stress which causes the disintegration of rocks. Chemical weathering can have a negative impact on consumers of the water. If the rocks host significant amounts of heavy metal bearing minerals such as the common sulphide species, then the water will become acidic and be enriched in iron, arsenic, copper, lead, zinc or whatever mineral species have broken down in the parent rock. At the very least the water will taste odd, in the worst case it will be poisonous and discoloured. Chemical weathering of limestone and other calcium-rich rocks creates lime-rich water. This makes "hard" water, which resists soaps and detergents, and can leave calcium scale buildups on pipes and fittings. Most other rocks will simply break down without liberating anything which will adversely impact upon water quality.

Answer 6

i think its 6, because its really stable and doesnt change, or something like that