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  1. byjus.com › question-answer › atomic-mass-numberAtomic mass, number, symbol of 1st 20 elements. - BYJU'S

    Question. Give an atomic number, atomic symbol, atomic mass of the first 20 elements. Solution. The atomic number of an atom is equal to the number of protons in the nucleus of an atom or the number of electrons in an electrically neutral atom. Atomic number = Number of protons.

  2. periodictableguide.com › atomic-mass-of-all-elementsAtomic Mass of all Elements (Chart + Rounded values)

    Mar 23, 2023 · The Atomic masses are represented in the Atomic mass unit (u). The elements whose atomic masses are written in bracket ( ) are the synthetic elements and their atomic masses values represent the Atomic Mass of the most stable isotope.

  3. byjus.com › chemistry › atomic-mass-of-elementsAtomic Mass of First 30 Elements - Table of Elements with ...

    Atomic Mass of First 30 Elements - Atomic Mass of Elements is Measured with the Help of its Unit - Atomic Mass Unit. One such Unit is Equal to One-Twelfth of the Mass of a Carbon-12 Atom Which is at Rest. Learn about Atomic Mass of First 30 Elements at Byjus.

  4. byjus.com › chemistry › first-20-elementsFirst 20 Elements with Symbols and Atomic Number (Table) - BYJU'S

    The first 20 elements of the periodic table have been listed in a tabular format along with their symbols and atomic numbers. Learn about the first 20 elements here.

  5. www.geeksforgeeks.org › atomic-massAtomic Mass | Table of First 30 Elements - GeeksforGeeks

    Feb 25, 2024 · Atomic mass is the total mass of all subatomic particles of an atom, including protons, neutrons, and electrons. Learn about its Definition, AMU, mass of first 30 elements, mass number, difference with atomic number, fractional atomic mass, molecular mass and Quiz at GeeksforGeeks.

  6. www.vedantu.com › chemistry › atomic-mass-of-elementsAtomic Mass of Elements|Atomic Mass of First 30 Elements

    6 days ago · The atomic mass is the average mass of the atoms of an element measured in the atomic mass unit (amu) or Daltons, D. The atomic mass is determined by averaging the weight of all the isotopes of the element.

  7. pubchem.ncbi.nlm.nih.gov › periodic-table › atomic-massAtomic Mass | Periodic Table of Elements - PubChem

    Explore how atomic mass changes with atomic number in the periodic table of elements via interactive plots.