2013年2月16日 · Elsewhere in the periodic table, alkali metals which have only one or two valence electrons want to get rid of them, to get back to a complete valence shell underneath. …

2015年2月4日 · The periodic table actually looks like this:...you can see that the first 14 elements in either series don't belong to any group from the main body of the table. You could say that …

2024年10月19日 · The periodic table developed by Mendeleev is an incredibly useful tool for predicting the physical and chemical properties of elements, but you must understand that it …

2017年1月18日 · I was studying the periodic table. My teacher said that . Group 1 elements are called alkali metals because their oxides are soluble in water and group 2 elements are called …

2015年10月14日 · $\begingroup$ Expanding on the argument, the periodic tables at my school always used roman numerals for group numbers and the transition metals had group numbers …

2015年4月15日 · From what I understand, in a stepwise ionization process, it is always the highest-energy electron (the one bound least tightly) that is removed first. So when we go …

2016年11月8日 · Down a group means that the valence electrons are on a higher energy level (they are further away from the nucleus). You would also expect that going down a group, …

2018年5月30日 · Conversely, at the far left of the table, the Group 1A atoms hold on so loosely to their lone electron that the H atom is able to leave with the metal's electrons, as H-. Going …

2018年4月8日 · It seems that the carbon group is known as either the tetrels or the crystallogens; while the boron group is known as triels or icosagens. These names are very rarely used. …

2014年1月6日 · The Group 4 atoms have 4 valence electrons. The Group 5 atoms have 5 valence electrons. The Group 6 atoms have 6 valence electrons. The Group 7 atoms have 7 valence …