mass number


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Related to mass number: Isotopy

mass number

n.
The sum of the number of neutrons and protons in an atomic nucleus. Also called nucleon number.

mass number

n
(Atomic Physics) the total number of neutrons and protons in the nucleus of a particular atom. Symbol: A Also called: nucleon number

mass′ num`ber


n.
the number of nucleons in an atomic or isotopic nucleus. Symbol: A
[1920–25]

mass number

The total number of protons and neutrons in the nucleus of an atom. For example, nitrogen has 7 protons and 7 neutrons in its nucleus, giving it a mass number of 14.

mass number

1. The total number of protons and neutrons (nucleons) in the nucleus of an atom.
2. The number of nucleons (protons and neutrons) in the nucleus of an atom.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.mass number - the sum of the number of neutrons and protons in an atomic nucleusmass number - the sum of the number of neutrons and protons in an atomic nucleus
mass unit - a unit of measurement for mass
Translations

mass number

n (Phys) → numero di massa
References in periodicals archive ?
That is the balance of energy must be from which the neutrons number N and further the mass number A = N + z can be determined:
ear mass number of grain per ear and 100 grain weight were similarly increased (Pless than 0.
00866492; %neutron mass in atomic mass units m1 = mn/mp; %ml in units of one proton (the neutron here) A= 4; %atomic mass number (A=4 => helium) m2 = 4.
When PBS rebroadcast its American Experience series on Ronald Reagan in early February, it mentioned how Reagan was able to detach himself from the impact that his policies would have on the individual because he viewed those policies as affecting a mass number that did not necessarily correlate to people and families.
Bishop Khoder receives Easter well- wishers at the Bishopric main office from 11:00 till 1:00 pm and from 4:00pm till 7:00pm >> Bishop Elie Bshara Haddad officiating over twin mass services in Saida and Deir el Qamar Bishopric at St Nicolas Cathedral - Saida 07:00 Opening doors and Easter mass 11:00 Mass number 2 > 10:00 Catholicus Aram I officiating over Easter mass at the Orthodox Armenian Cathedral- Antelias to be followed by Easter message at 11:00 after which the prelate meets with Easter well-wishers.
Zhang Lijun, Chairman of VODone, "The cooperation between VODone and Cmedia enables VODone to become a new media company with a competitive multimedia platform on a significantly mass number of new mobile handsets.
where M(Z, A) is the mass of nucleus with Z and A as proton number and mass number, respectively.
Isotope: Any of the several different forms of a chemical element that differ in their atomic mass (mass number); isotopes of an element possess the same number of protons in their nuclei but different numbers of neutrons and therefore differ in their mass numbers, which reflect the total number of protons plus neutrons.
Yet the idea of customizing mailers from the national headquarters to local tastes has not drawn a mass number of converts.
Egg mass Number of Plant species location egg masses found Citrus limon Leaf 96 Stem/shoot 17 Cedrela lilloi Leaf 12 Stem/shoot 8 Zea mays Leaf 21 Ligustrum lucidum Leaf 9 Psidium guajava Leaf 5 Urera caracasana Leaf 1 Stem/shoot 1 Diadenopteryx sorbifolia Leaf 2 Bauhinia forfIcata Leaf 2 Sorghum halepense Leaf 1 Ruprechtia laxiflora Leaf 1 Egg mass Number of eggs per egg mass Plant species location (Meant [+ or -] SD) Citrus limon Leaf 9.
The mass number of organisms added to the septic tanks per month via the additives were typically less than the cumulative mass number of organisms already present in the control septic tanks.
For spallation sources, non-fissile nuclei of mass number A > 100 emerge as appropriate targets [13].