mass number of sodium

Still have questions? We know that the atomic number of sodium is 11. An atomic number of 11 means this atom will have 11 protons. A mass number of 23 means … How do you think about the answers? This atomic mass is calculated by adding together the number of protons and neutrons present in the atom's nucleus. It is considered a monoisotopic element and it has a standard atomic weight of 22.989 769 28 (2).Sodium has two radioactive cosmogenic … aprox. It has an atomic mass of 22.9, which is often rounded up to 23 to accurately determine the number of neutrons in the element. 0 0. 1 decade ago. Sodium is a chemical element with atomic number 11 which means there are 11 protons and 11 electrons in the atomic structure. no of atoms in Na =2 * avocadro no= 2 * 6.03 *10^23 =12.06 *10^23 atom 3) than we have to multiply the … The total number of neutrons in the nucleus of an atom is called the neutron number of the atom and is given the symbol N. Neutron number plus atomic number equals atomic mass number: N+Z=A. 1 decade ago. Sodium was discovered by Sir Humphrey Davy in 1807. Name: Sodium Symbol: Na Atomic Number: 11 Atomic Mass: 22.98977 amu Melting Point: 97.72 °C (370.87 K, 207.9 °F) Boiling Point: 883 °C (1156 K, 1621 °F) Number of Protons/Electrons: 11 Number of Neutrons: 12 Classification: Alkali Metal Crystal Structure: Cubic Density @ 293 K: 0.971 g/cm 3 Color: silvery Atomic Structure The element sodium has 12 neutrons. #Z#, UNEQUIVOCALLY identifies the atom; #Z=11# for sodium, #Z=10# for neon; #Z=12# for magnesium. 23 Na is the only stable (and the only primordial) isotope. Sign in. But the number of #"nucular protons"#, i.e. The element also has an atomic number of 11, meaning that it has 11 electrons and 11 protons. ››More information on molar mass and molecular weight. The chemical symbol for Sodium is Na.. Atomic Mass of Sodium. The Mass Number of an element is equal to the protons added to the neutrons. There are 21 recognized isotopes of sodium (11 Na), ranging from 18 Na to 39 Na and two isomers (22m Na and 24m Na). The mass number (represented by the letter A) is defined as the total number of protons and neutrons in an atom. Anonymous. You can sign in to vote the answer. Therefore . Mass Number of Sodium. 0 0. is given at the top left of the element's symbol, for example, sodium has a mass number of 23. Consider the table below, which shows data from the first six elements of the periodic table. Table \(\PageIndex{1}\): Atoms of the First Six Elements; Name Symbol Atomic Number (Z) Mass numbers of typical isotopes of Sodium are 23. Get your answers by … No of moles of Na = mass of Sodium/molar mass 1) frist we have to divide mass of Na w.r.t molar mass of Na #) molar mass of Na =23 gm/mol #) no of moles of Na =46/23 =2mol 2) than we easily get the no of moless. Atomic Number of Sodium. Note that, each element may contain more isotopes, therefore this resulting atomic mass … Anonymous. 23g per mol (23 amu per each) 0 0. The element Sodium has an atomic number of 11 and an average atomic mass of 22.98 which makes the mass number 23. The sum of neutrons and protons, the massive nuclear particles, gives the mass number, with which we often label the elemental symbol as a left hand superscript. The mass number. Sodium is a metallic element on the periodic table with an atomic number of 11 and an atomic mass of 22.98 amu. X. Atomic mass of Sodium is 22.9897 u. Mass number is protons plus neutrons and can be different for different isotopes. In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together. 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