The number of protons, electrons, and neutrons:P
The atomic mass of an element is equal to the number of protons.
The mass number of an element is equal to the sum of protons and neutrons in the nucleus, while the atomic number corresponds to the number of protons. These values can be found on the periodic table for each element.
Answer:The atomic mass is NOT equal to both 'atomic number' and 'number of protons .The atomic mass of an element is by approximation equalto, but not exactly, the sum of protons and neutrons in the nucleus of the atom.The number of protons is given by the atomic number, not atomic mass.So, only the atomic number of an element AND the number of protons are equal. The atomic mass is also depending on the number of neutrons.More explicative:The atomic mass of an element refers to a particular isotope of that element, and is equal to the sum of the protons and neutrons in the nucleus of atoms of that isotope.For example, carbon-12 atoms have 6 protons and 6 neutrons, while carbon-14 atoms have 6 protons and 8 neutrons.Atomic weight, which is shown on the Periodic Table is a weighted average of the atomic masses of all the different isotopes of each element.For example, the atomic mass of C-12 is 12.0000 a.m.u. and the atomic mass of Carbon is 12.0107(8) g/molFrom the Periodic Table you can only tell the number of protons in the atoms of all of the isotopes of a given element, because the number of protons defines the element, and is the element's atomic number. However, you cannot tell the number of neutrons from the Periodic Table. You would have to look up the atomic masses of all the isotopes of each element in some sort of reference. The atomic number of an element is equal to the number of protons in the nucleus of an atom.
Magnesium is a meta element. Atomic mass of it is 24.
The mass number is the sum of protons and neutrons in the atomic nucleus. The number of protons is equal to the atomic number.
The Atomic Mass is equal to the number of protons and electrons that an element has.
The atomic mass of an element is equal to the number of protons.
The atomic mass of an element is equal to its molar mass in grams/mol.
Hydrogen
The element's average atomic mass.
This is sum of the atomic weights of elements contained in the formula.
no. of protons in its neucleus
1
The mass number of an isotope of an element is equal to its atomic mass number. However, the atomic weight of an element is a weighted average of the isotopes that occur in the element in nature. Because almost all elements have more than one naturally occurring isotope (if they have any), the atomic weights of most elements are not integers, as mass numbers always are.
1. The molecular mass of a compound is the sum oh the atomic weights of the elements contained in the molecule of this compound. 2. The atomic number of an element is the number of this element in the Periodic Table of Mendeleev; the atomic number is equal to number of protons and electrons.
atomic weight = mass of protons + mass of neutrons
The mole is the atomic weight expressed in grams.