1. Zinc Element Mass Number
  2. Mass Number Of Zinc 64
  3. Zinc-63 Mass Number
  4. Zinc-64 Mass Number
IsotopeAtomic mass (Da)Isotopic abundance (amount fraction)
64Zn 63.929 142(5)0.4917(75)
66Zn 65.926 034(5)0.2773(98)
67Zn 66.927 127(5)0.0404(16)
68Zn 67.924 844(5)0.1845(63)
70Zn 69.925 32(2) 0.0061(10)

  1. Zinc (atomic symbol: Zn, atomic number: 30) is a Block D, Group 12, Period 4 element with an atomic weight of 65.38. The number of electrons in each of zinc's shells is 2, 8, 18, 2, and its electron configuration is Ar 3d 10 4s 2.
  2. Element Zinc (Zn), Group 12, Atomic Number 30, d-block, Mass 65.38. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.

In 1961, the Commission recommended Ar(Zn) = 65.37 based on the chemical determinations. Meanwhile,mass-spectrometric determinations yielded a higher value of Ar(Zn) = 65.387.

In 1971, coulometric determinations yielded Ar(Zn) = 65.377(3), whereupon the Commission changed the recommendedvalue to 65.38(1). Soon, another mass-spectrometric value was published which yielded Ar(Zn) = 65.396(5). Faced with this ongoing discrepancy between chemical and physical values, in 1983 the Commission recommended Ar(Zn) = 65.39(2), explaining that the value was now weighted toward the mass-spectrometric measurement, but the uncertainty included the coulometric measurement. In 2001, Ar(Zn) was changed to 65.409(4) and in 2007 the Commission acknowledged that data influencing the 2001 decision could no longer be supported and recommended the current value of Ar(Zn) = 65.38(2). This change was unique in the sense that for the first time in the history of the Commission, the standard atomic weight (with its uncertainty) was outside the bounds of the previous value.

Zinc

64.929241 g/mol. Zinc-65 atom is a zinc atom in which the nucleus contains 35 neutrons. It has a half-life of 244 days, decaying by emission of a positron (beta (+) decay), and is the most abundant and stable of the 25 known radioisotopes of zinc.

Mass

CIAAW

Zinc Element Mass Number

Zinc
Ar(Zn) = 65.38(2) since 2007
The name derives from the German zink of unknown origin. It was first used in prehistoric times, whereits compounds were used for healing wounds and sore eyes and for making brass. Zinc was recognized asa metal as early as 1374.

Isotopic reference materials of zinc.

IsotopeAtomic mass (Da)Isotopic abundance (amount fraction)
64Zn 63.929 142(5)0.4917(75)
66Zn 65.926 034(5)0.2773(98)
67Zn 66.927 127(5)0.0404(16)
68Zn 67.924 844(5)0.1845(63)
70Zn 69.925 32(2) 0.0061(10)

In 1961, the Commission recommended Ar(Zn) = 65.37 based on the chemical determinations. Meanwhile,mass-spectrometric determinations yielded a higher value of Ar(Zn) = 65.387.

Mass Number Of Zinc 64

In 1971, coulometric determinations yielded Ar(Zn) = 65.377(3), whereupon the Commission changed the recommendedvalue to 65.38(1). Soon, another mass-spectrometric value was published which yielded Ar(Zn) = 65.396(5). Faced with this ongoing discrepancy between chemical and physical values, in 1983 the Commission recommended Ar(Zn) = 65.39(2), explaining that the value was now weighted toward the mass-spectrometric measurement, but the uncertainty included the coulometric measurement. In 2001, Ar(Zn) was changed to 65.409(4) and in 2007 the Commission acknowledged that data influencing the 2001 decision could no longer be supported and recommended the current value of Ar(Zn) = 65.38(2). This change was unique in the sense that for the first time in the history of the Commission, the standard atomic weight (with its uncertainty) was outside the bounds of the previous value.

CIAAW

Zinc-63 Mass Number

Zinc
Ar(Zn) = 65.38(2) since 2007
The name derives from the German zinkMealy machine example. of unknown origin. It was first used in prehistoric times, whereits compounds were used for healing wounds and sore eyes and for making brass. Zinc was recognized asa metal as early as 1374.

Zinc-64 Mass Number

Isotopic reference materials of zinc.