Why do elements form compounds? List some of the uses of the noble gases and reasons for those uses. What is the main reason why there is heavy water in a nuclear reactor? Why are nonmetals good oxidizing agents? Why is it important in this experiment to be accurate in all your measure...
Why do elements form compounds? Why is CCl4 classified as a compound? Why can't a molecule with the formula C4H11O exist? Explain why the following organic compound cannot exist. 5,5-dibromo-1-cyclobutanol Explain why the following organic compound cannot exist. 3-hexanoic acid ...
Boron form covalent compound due to AHigher ionization energy BLower ionization energy CSmall size DBoth (A) and ( C)Submit Question 3 - Select One Which among the following elements has the tendency to form covalent compounds? ABa BBe CMg DCaSubmit ...
4 (a)Explain why compounds of transition elements are usually coloured.[3](b)Coppe is used to make alloys such as brass. The percentage of copper in a sample of brass can be determined by dissolving the sample in concentrated nitric acid and reacting the mixture with potassium iodide. The ...
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?元素周期表中同...
Although there is an abundant supply of nitrogen in Earth’s atmosphere, it cannot be absorbed by plants unless it is “fixed,” or combined chemically with other elements to form nitrogen compounds. Nitrogen-fixing bacteria help tropical rain forest plants cope with the poor soils there by ...
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 ...
created out of non organic components, that these non organic parts were present as separate elements on early earth.And later combined in such a way to form organic compounds like amino acids.But there's other evidence that says that points to meteorite as a source of organic compounds, on...
Its elements and compounds form our bodies, and its energy crackles through us. Under a starlight sky we are but an insignificant corner in its titanic body, each of us looking back out at the whole. Beyond the limits of the Milky Way, a vast number of alien galaxies fills the cosmos....
Why do elements form compounds? Why is oxygen on the periodic table O? Why isn't it O2? Why don't electrons in atoms repel? On the basis of electronic structures, explain why most metal halides are ionic. Why does CrO3 in acidic water oxidize?