题目Most of the elements in the periodic table are___. A. metals B. non-metals C. metalloids D. noble gases 相关知识点: 试题来源: 解析 A。元素周期表中的大多数元素是金属。虽然有非金属、类金属和稀有气体,但金属的数量相对较多。反馈 收藏...
Within the periodic table loom many potential hazardous elements. Some elements are dangerous due to their toxicity. Others are dangerous because of how they respond, react, or even explode in the outside environment. And perhaps the most threatening ele
Over 150 years of scientific discoveries led to the identification of currently 118 elements in the earth's crust. These elements along with their physical and chemical properties are listed in the periodic table of elements which was started by Russian chemist Dmitri Me...
To determine which ion is the most stable in the M2+ state among titanium, vanadium, chromium, and manganese, we can follow these steps: 1. Identify the Elements and Their Positions: - The elements in question are titanium (Ti), vanadium (V), chromium (Cr), and manganese (Mn). These...
Recycling Reality: Humans Set to Trash Most Elements on the Periodic TableDavid Biello
Which element is likely to be the most reactive metal in the periodic table? A. Hydrogen. B. Oxygen. C. Sodium. D. Gold. 相关知识点: 试题来源: 解析 C。在元素周期表中,钠是一种活泼的金属。氢不是金属;氧是非金属;金不活泼。反馈 收藏 ...
reactivity correlates to a decrease inelectronegativity(increase in electropositivity.) So, just by looking at theperiodic table,you can predict lithium will be less reactive than sodium, and francium will be more reactive than cesium and all of the other elements listed above it in the element ...
What family on the periodic table of elements has a full outer electron shell? Which is the most reactive element in the period table? Which of the elements in the following periodic table are lanthanides? In period 2 of the periodic table, which group co...
Gold, the 79th element on the Periodic Table of the Elements, is one of the more recognizable of the bunch. It is malleable and shiny, making it a good metalworking material. Chemically speaking, gold is a transition metal. Transition metals are unique, because they can bond with other el...
But sometimes, things aren't quite so clearly divided. There's a zig-zag line across the periodic table, and elements along that line—silicon included—often have an odd selection of properties that reflect both a metallic and non-metallic nature. Silicon forms hard, lustrous, brittle ...