Water is made up of two elements, hydrogen and oxygen. How many hydrogen atoms are there in one molecule of water? A. One B. Two C. Three D. Four 相关知识点: 试题来源: 解析 B。解析:一个水分子的化学式是H₂O,这表示一个水分子由两个氢原子和一个氧原子组成,所以答案是B。A选项一...
What are the first 18 elements? Today, I will present the first eighteen elements which are Hydrogen,Helium, Lithium,Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, Neon, Sodium, Magnesium, Aluminum, Silicon, Phosphorus, Sulfur, Chlorine, and Argon. What do you call the element from ato...
These chemical elements are detectable in the dry matter content of the plant body, that part that is left after water or moisture content is completely removed. Laboratory analysis showed that the proportions of these chemical elements in the dry tissue range from as low as 0.00001% or 0.1 pa...
How are air elements seen/observed? «on:September 12, 2015, 10:46:56 PM » I'm interested in knowing how are elements like oxygen, nitrogen, and hydrogen and their atoms are seen/observed, how they're isolated, etc. Logged
How many different elements are in a water molecule? How many hydrogen atoms can bind to one carbon atom? A hydrogen atom has one electron. How many covalent bonds can the hydrogen form? How many covalent bonds can hydrogen form? How many atoms are required to form a molecule? How many ...
example,carbon atomsalways have six protons;hydrogen atomsalways have one; andoxygen atomsalways have eight. Different versions of the same element, called isotopes, can have a different number of neutrons. Elements can also gain or lose electrons to become charged, in which case they are called...
How many unpaired electrons are in a cu2+ ion? Electron Pairing Atoms and ions consist of electrons that occupy orbitals somewhere around the nucleus of the atom. Orbitals are spaces around the nucleus that an electron has the greatest likelihood of occupying. Different orbitals have different ene...
How many electrons are there in 1C?Charge:An atom is made up of electrons, protons, and neutrons. The positively charged nucleus is made of protons and neutrons whereas electrons revolve around the nucleus. The protons are positively charged and the electrons have an equal amount of negative ...
How many neutrons, protons, and electrons are in carbon? What is the mass in grams of 44.5 mol Xe? Why is Avogadro's number called the mole? Why does one multiply the mass of one element in a given compound by the moles of that compound to find the amount of the elements present in...
How many unpaired electrons are present in the ground state of O+ ion? How many of the following elements have 2 unpaired electrons in the ground state: C, O, Ti, Si. a) 1 b) 3 c) 4 d) 2 Determine the number of unpaired electrons in the foll...