Related to this Question How do you find atomic radius given the density? How would you determine the quantum number, ml, for an element? What is the relative mass of an electron? What is the density of graphene? What is density? Explain in detail. ...
The atomic weight is the average mass of all the element's isotopes. It is the average number of all the protons and neutrons in the nucleus. Generally, the atomic mass increases as you move down or across each group or period. Of course, there are exceptions to this rule. Check out ...
How can one find the valency of an element? How do cations and anions gain or lose protons and electrons? How do you show the number of protons and neutrons on a Bohr-Rutherford diagram? Explain valance electrons What is the electron configuration for an a...
Just two strategies existed at the time to categorize these elements: separating them into metals and nonmetals or grouping them by an element's number of valence electrons (the electrons in the outermost shell). The first section of Mendeleev's book dealt with just eight of the known elements...
The pack generally goes out hunting during the day, and the alpha female guards the pups, using distraction to keep predators, usually lions, away from the den. Most of the Leballa pack with the den entrance in the foreground. Credit: Cindy Miller. When we arrived at the scene, we ...
neutron, but it usually doesn't, so the mass number of hydrogen is 1. Oxygen, on the other hand, has an equal number of proteins and neutrons, which raises its mass number to 16. Subtracting an element's mass number from its atomic mass tells you the number of protons in its nucleus...
Most of the 92 atoms that occur in nature come in two or more slightly different forms, called isotopes. Isotopes of the same element differ from each other only in the number of neutrons contained in their nuclei. It can be useful to apply all of these principles together to come up wit...
My son, for example, has a glow-in-the-dark yo-yo, a glow-in-the-dark ball, a glow-in-the-dark mobile and even (if you can believe it) a pair of glow-in-the-dark pajamas! They make him easy to find at night! If you have ever seen any of these products, you know that ...
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...
Step 1: Find The Mass (Amount) Of Each Element In The Compound We start the procedure by finding the exact amount (in grams) of each element that makes up the compound being studied. Let’s assume that the compound whose empirical formula is to be found is XaYbZc. Chemical analysis of...