Nitrogen Mass Number

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Molar Mass, Molecular Weight and Elemental Composition Calculator

  1. Nitrogen Atomic Symbol
  2. Periodic Table Nitrogen Mass Number
  3. Nitrogen Mass Number 40

The number of neutrons can differ from atom to atom, so the mass number is the number of protons and neutrons on average. The listed atomic mass of nitrogen is 14.007.

Nitrogen Mass Number

Molar mass of nitrogen is 28.01340 ± 0.00040 g/mol
Compound name is nitrogen
Convert between N2 weight and moles
CompoundMolesWeight, g
N2

Elemental composition of N2
ElementSymbolAtomic weightAtomsMass percent
NitrogenN14.00672100.0000

Mass percent compositionAtomic percent composition

Sample reactions for N2
EquationReaction type
N2 + H2 = NH3synthesis
N2 + O2 = N2Osynthesis
Mg + N2 = Mg3N2synthesis
N2 + O2 = N2O5synthesis
Li + N2 = Li3Nsynthesis

Formula in Hill system is N2

Computing molar mass (molar weight)

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Computing molecular weight (molecular mass)

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Examples of molecular weight computations: C[14]O[16]2, S[34]O[16]2.

Definitions of molecular mass, molecular weight, molar mass and molar weight

  • Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
  • Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
Weights of atoms and isotopes are from NIST article.
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Nitrogen Atomic Symbol

How many electrons, protons, and neutrons does nitrogen-14 have? Is it an anion or cation?

Name: Nitrogen Symbol: N Atomic Number: 7 Atomic Mass: 14.00674 amu Melting Point:-209.9 °C (63.250008 K, -345.81998 °F) Boiling Point:-195.8 °C (77.35 K, -320.44 °F) Number of Protons/Electrons: 7 Number of Neutrons: 7 Classification: Non-metal Crystal Structure: Hexagonal Density @ 293 K: 1.2506 g/cm 3 Color: colorless Atomic Structure. The mass number of Nitrogen is 14, and its atomic number is 7. The mass number may vary between atoms of a particular element. The mass number is given by the sum of the protons and neutrons in the nucleus. An atom of nitrogen (N) has a mass number of 15.

Nitrogen mass number

I know nitrogen-14 has 7 protons, but I do not know how many neutrons or electrons. Cations are positively charged ions while anions are negatively charged.

1 Answer

Explanation:

Nitrogen-14 is actually an isotope of nitrogen, so right from the start, you can say that it is a neutral atom.

Isotopes are atoms that have the same number of protons but different numbers of neutrons in the nucleus. You know that nitrogen-14 has #7#protons in the nucleus because it is an isotope of nitrogen, which has an atomic number equal to #7#.

Because nitrogen-14 is a neutral atom, the number of protons it has in its nucleus must be equal to the number of electrons that surround its nucleus.

#'neutral atom ' implies ' no. of protons = no. of electrons'#

Now, in order to find the number of neutrons present in the nucleus of a nitrogen-14 atom, you must use its mass number. The mass number of an isotope is added to the name of the isotope.

In this case, you have

#'nitrogen-'color(blue)(14) implies 'mass number' = color(blue)(14)#

The mass number of an atom tells you the number of protons and neutrons located in the nucleus.

Periodic Table Nitrogen Mass Number

So you can say that

Nitrogen Mass Number 40

#'no. of protons + no. of neutrons' = color(blue)(14)#

This implies that a nitrogen-14 atom contains

#(color(blue)(14)color(white)(.)'protons + neutrons') - '7 protons' = '7 neutrons'#

Now, a nitrogen atom, regardless of its mass number, will always form #3-# anions, #'N'^(3-)#. In other words, any nitrogen atom will take in#3#electrons to complete its octet--this happens because nitrogen is located in group #15# of the Periodic Table.

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