Yes, the empirical formula can be different from the molecular formula. The molecular formula represents the actual number of atoms of each element in a molecule, while the empirical formula represents the simplest ratio. How is the empirical formula useful in chemistry?
Lewis structures were proposed by Lewis to explain the bonding between atoms and the position of valence electrons around the atoms. It also helps in understanding the structural aspects of the molecules by showing lone pairs as well as valence electrons around each a...
This is because the periodic table is arranged according to the number of electrons in the outermost "shell" of an atom, and ions are formed with atoms either lose or gain electrons so that their outer shells are full. Each "group" of the periodic table is associated with a different ion...
We use some arbitrary rules to assign the oxidation number of an element in a compound. For example the oxidation number of ions are equal to their overall charge. This is so for Cl and Na in NaCl. The charge of Na is +1 and the charge of Cl is -1.Answer and Explanation: Become ...
Determine each element in the structure by looking at its chemical formula. For example, carbon dioxide's formula is CO2. Therefore it has one carbon atom and two oxygen atoms. Step 2 Look up each element on the Periodic Table. Note each group, or column number. This reflects how many va...
How do you know how many electrons an element tends to gain or lose? How many valence electrons do nonmetals have? What do orbitals mean for valence electrons? How many valence electrons does Hydrogen have? In which group do all the elements have the same number of valence electrons? How ...
The Log window shows the numerical results of clustering, namely the number of chains and clusters, the percentage of noise and the optimal values of the hyperparameters (eps,min_samples) and the metric used. Further study of the macromolecule can be carried out using the PyMol program (Optio...
Recorded Absorbency after each measurement is converted into a number of generating this amount of absorbing atoms and the calibration graph is constructed as the dependence of the number of absorbing atoms of the element concentration in the sample. 3 yl.GORBACHEV SERGEJ F...
【抱歉:AP试卷的考题必须用英文解答】1、Explain why the dipole moment of CHCl3 is less than that of CH2Cl2.2、Define oxidation number.3、How can the oxidation number be used to determine the charge on the species
A mole of any substance is equal to 6.02 x 10^23 particles — usually atoms or molecules — of that substance. For a given element, the mass (in grams) of one mole is given by its mass number on the periodic table; the "molar mass" of a molecule is the sum of the molar masses...