What is the mass number of an element?
The mass number of an element is the total mass of atoms in an element (i.e protons, electron and neutrons). If you were to look on a periodic table element square the mass number is the number above the element letter while the number below is the atomic number E.g. If you look on a periodic table the mass number of Oxygen (O) is 16.0 mass number is the atomic mass of a particular isotope ...
Asked in Atoms and Atomic Structure
How many neutron are in oxygen?
There are 8 neutrons in oxygen. You can determine the number of neutrons in any element by subtracting the atomic number (which is 8 for oxygen) from the atomic mass, rounded to the nearest whole number (which is 16 for oxygen). This is because the mass of any element comes mainly from the protons and the neutrons - the mass of the electrons is too tiny to be a significant contribution. The atomic number corresponds to the number of protons in an...
Asked in Periodic Table, Elements and Compounds
What is the atomic number and the mass number of oxygen?
The atomic number of oxygen is 8. The mass number is the sum of neutrons and protons in the atomic nucleus and is different for each isotope of any element. For example the isotope oxygen-16 has the mass number 16. ...
Asked in Atomic Mass
What element has 8 neutrons and atomic mass of 16?
Oxygen does. The atomic mass is protons + neutrons, and the atomic number is the number of protons. Oxygen has an atomic number of 16-8=8. ...
An explination of what mass number and atomic number are?
The atomic number refers to the number of protons in the element. And since the number of protons = number of electrons, the atomic number is also the number of electrons in the element. The mass number of an element refers to the number of neutrons and protons in the element. &since electrons are negligible in mass, the number of neutrons can be found out by subtracting the atomic number from the mass number. Take for example, oxygen. Oxygen has an atomic...
Asked in Atomic Mass
What is the mass number atomic mass of oxygen?
The mass number is the sum of neutrons and protons in the atomic nucleus and is different for each isotope of any element. For example the isotope oxygen-16 has the mass number 16. The atomic weight of oxygen (not atomic mass) is [15,99903; 15,99977] after the IUPAC Tables - 2009. ...
Which is usually the larger number the mass number of an element or the formula mass of a compound that contains the element?
The formula mass of a compound that contains the element would be a larger number than the mass number of the individual element. The individual element would simply be the mass of just that one atom, where as the compound would be the mass of that atom plus the other masses of the other atoms that make up the compound. ex. Oxygen-O has a mass number of about 16 grams. Water-H2O has a formula mass of 2 x mass of Hydrogen-H...