What type of chemical bond joins sodium (element 11) and chlorine (element 17)? What is the element astatine used for? What is the chemical element radon? What is the chemical formula for the compound formed between calcium and chlorine?
What type of element is calcium?Calcium:Calcium is represented by Ca on the periodic table. Its atomic number is 20 and it is silvery gray in color. It is also found in limestone and fossilized remains. It was discovered and first isolated by Humphry Davy....
The chemical element with atomic number 17 is chlorine. What is the abbreviation for chlorine? A. Cl B. Ch C. Cy D. Cg 相关知识点: 试题来源: 解析 A。氯元素的英文是 chlorine,其缩写形式是 Cl。选项 B“Ch”一般不是氯元素的缩写;选项 C“Cy”不是氯元素的缩写;选项 D“Cg”一般不是任何...
What is the silicon element? Is silicon a metal? Learn what type of element is silicon, silicon uses, silicon properties, and if silicon is metal or nonmetal. Related to this Question What is the mass number for silicon? What is the atomic mass of silicon?
Which element is more reactive, Iodine or Astatine? Why does chlorine have a higher electronegativity value than krypton? What H+ ions of an acid and the OH- ions of a base means. What is the difference in macroscopic properties between covalent and ionic bonds?
Magnesium is an element that plays a part in more than 300 enzyme reactions in your body, ranging from nerve function to regulating blood pressure and facilitating the immune system's work. About half of the estimated 25 grams of magnesium in the adult body is found in the skeleton, while ...
most of its compounds are trivalent. it is a constituent of all living tissues. since it is a component of dna and part of a genetic code, it is an essential element of life. it is found in nitrates and nitrites in soil and water. all these substances are part of the nitrogen cycle...
NH3is polar, and so is O3 b) If the molecule contains only nonpolar bonds and there are no lone pairs on the central atom(s), the molecule will be nonpolar. All CxHymolecules are nonpolar c) If all of the atoms attached to the central atom are of the same element and there are no...
Cl - Chlorine Ar - Argon K - Potassium Ca - Calcium Element Symbols and Numbers The number of the element is its atomic number, which is the number of protons in each atom of that element. The element symbol is a one- or two-letter abbreviation of the element's name. Sometimes it re...
There could be problems for the public understanding of chemistry too. Schwarz points to how, because some elements become associated with toxic substances – chlorine gas, say, or sulfur in the sulfur dioxide released from burning coal and oil – the element itself may become regarded as inheren...