Chemical Nomenclature Links

Particle	Charge	Relative Mass	Mass
Electron (e^-)	-1	1/1840	9.11 x 10^-28g
Proton (p or H⁺)	+1	ª1	1.67 x 10^-24g
Neutron (n)	0	ª1	1.67 x 10^-24g

Atomic number (Z) - the number of protons in the nucleus. This number is characteristic of a given element.

Atomic mass number (A) - the sum of the protons and neutrons in a given atom (p + n).

Atomic mass - the actual mass of an average atom in a sample. The characteristic atomic masses for Earth are shown on periodic tables.

Atomic Mass Unit: the atomic mass unit = amu is a unit of mass for atoms. It is defined as 1/12 the mass of one atom of ¹²C, where the mass of ¹²C is defined as 12 exactly.

Try ¹⁴C

Symbol Z A p n e^-

¹⁴C 6 14 6 8 6

How about ²³⁸U⁶⁺?

Symbol Z A p n e^-

²³⁸U⁶⁺ 92 238 92 146 86

Symbol Z A p n e^-

¹⁴C 6 14 6 8 6

²³⁸U⁶⁺ 92 238 92 146 86

³⁵Cl^- 17 35 17 18 18

¹⁸O^2- 8 18 8 10 10

© R A Paselk

Last modified 2 February 2015

Chemical Nomenclature Links

HSU Chemistry Elements Names

HSU Chemistry Table of Ions

HSU Chemistry Table of Common Acids

Particle

Charge

Relative Mass

Mass

Atomic number (Z) - the number of protons in the nucleus. This number is characteristic of a given element.

Atomic mass number (A) - the sum of the protons and neutrons in a given atom (p + n).

Atomic mass - the actual mass of an average atom in a sample. The characteristic atomic masses for Earth are shown on periodic tables.

Atomic Mass Unit: the atomic mass unit = amu is a unit of mass for atoms. It is defined as 1/12 the mass of one atom of ¹²C, where the mass of ¹²C is defined as 12 exactly.

Try ¹⁴C

Try ¹⁴C

How about ²³⁸U⁶⁺?

Symbol	Z	A	p	n	e^-
¹⁴C	6	14	6	8	6
²³⁸U⁶⁺	92	238	92	146	86
³⁵Cl^-	17	35	17	18	18
¹⁸O^2-	8	18	8	10	10

Chemical Nomenclature Links

HSU Chemistry Elements Names

HSU Chemistry Table of Ions

HSU Chemistry Table of Common Acids

Particle

Charge

Relative Mass

Mass

Atomic number (Z) - the number of protons in the nucleus. This number is characteristic of a given element.

Atomic mass number (A) - the sum of the protons and neutrons in a given atom (p + n).

Atomic mass - the actual mass of an average atom in a sample. The characteristic atomic masses for Earth are shown on periodic tables.

Atomic Mass Unit: the atomic mass unit = amu is a unit of mass for atoms. It is defined as 1/12 the mass of one atom of 12C, where the mass of 12C is defined as 12 exactly.

Try 14C

Try 14C

How about 238U6+?

Atomic Mass Unit: the atomic mass unit = amu is a unit of mass for atoms. It is defined as 1/12 the mass of one atom of ¹²C, where the mass of ¹²C is defined as 12 exactly.

Try ¹⁴C

Try ¹⁴C

How about ²³⁸U⁶⁺?