This element is a non-metal and is very reactive. Where can it be found in the periodic table? A. In group 17 B. In group 18 C. In group 15 D. In group 16 相关知识点: 试题来源: 解析 A。非金属且非常活泼通常在周期表中的第十七族。第十七族元素为卤族元素,都是非金属且非常活泼。
Noble gases are nonreactive, nonmetallic elements ingroup 18of the periodic table. Noble gases are the least reactive of all elements. Why plastic is non reactive in nature? Plastics are non-reactive in nature.Because plastics are very harmful to our environment. ... If they are reactive with...
Nonmetals are the elements on the periodic table that are not metals. There are seventeen nonmetals, which are mostly gases, some solids and one in liquid form at room temperature. Examples of nonmetals include oxygen, hydrogen, carbon and bromine....
The IIA group of the periodic table are known as the alkaline earth metals, and it is the second column of elements. These elements are less reactive than the alkali metals though the metals are shiny and hard as well as malleable and ductile. Beryllium, Magnesium, Radium, Barium, Strontium...
Why elements in periodic table are considered neutral elements? Define reactive metals What charge do nonmetals have? Why does Fluorine have a valence of -1? How do you use the periodic table to identify this? How do chemists use the ...
For example, in Group 1 of the periodic table, lithium (Li) at the top is less metallic than cesium (Cs) at the bottom. Lithium is relatively hard and less reactive, while cesium is extremely soft and highly reactive. This illustrates the significant difference in metallic character as you...
Table 1.Measurement of optical density at 616 nm for electrolysis quantification (n= 6). The results showed that the BE did not induce significant electrolysis due to the electrical energy supply. Compared to the threshold of the electrolysis (0.82 V DC), the BE showed a minimal pH change ...
a. a colourless odourless relatively unreactive gaseous element that forms 78 per cent (by volume) of the air, occurs in many compounds, and is an essential constituent of proteins and nucleic acids: used in the manufacture of ammonia and other chemicals and as a refrigerant. Symbol: N; at...
Why do elements in group 1 become more reactive the further they are down the group? What is between metals and nonmetals on the periodic table? Why isn't beryllium an alkaline earth metal? How do valence electrons affect elements bonding with other elements? What are three properties of non...
Where are the most reactive nonmetals on the periodic table? What is the electronegativity of calcium? How is electronegativity related to covalent bonding? Which are more common: metals or nonmetals? What is the electronegativity of helium?