Transition elements form complex compounds due to (i) small size of cation. (ii) high nuclear charge of their cation (iii) availability of empty inner d-orbitals (of nearly same energy) for bonding to ligands
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Why do elements form compounds? Why do some metals conduct heat better than others? What causes their difference in heat conductivity? What gives an element its characteristics? Why did Bohr's model not stand up as more experiments were performed...
Elements in the same group (column) of the periodic table tend to exhibit similar chemical properties, so silicon, too, can form four covalent bonds, giving it the same potential for diversity as carbon. 如果碳的表现如此之好,那么为硅(在元素周期表中,硅就在碳的下方)就不行呢?元素周期表中...
Why do elements form compounds? Explain why magnesium metal is more reactive than aluminum metal even though they are in the same period of the periodic table. Explain the way in which atoms are held together in a chemical compound.
Also a chemical reaction alters the composition of the original matter, different elements or compounds are present at the end of the chemical change. Although an example of a chemical reaction is the process of rusting, you start with Iron mixed with air and water you get a different ...
bonds they might form with each other. On the far right-hand side of the periodic table is the group of elements called thenoble gases. Atoms of these elements (e.g., helium, krypton, neon) have full outer electron shells. These atoms are stable and very rarely form bonds with other ...
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(or 2, for the alkaline earths) to form cations. The halogens, on the other hand, readily accept the electrons to form anions. While the anions are more stable than the atoms, it's even better if the two types of elements can get together to solve their energy problem. This is ...
1. (Elements & Compounds) a black amorphous form of carbon made by heating wood or other organic matter in the absence of air: used as a fuel, in smelting metal ores, in explosives, and as an absorbent. See activated carbon 2. (Art Terms) a stick or pencil of this for drawing 3....