Atomic Mass

the answer is the atomic mass unit

The atomic mass unit is 1/12 from the mass of the isotope 12C.

Atomic mass is the sum of the number of protons and neutrons in the nucleus. The reason it is typically found in decimal form is because it is using the average number of neutrons, from all the different isotopes of that element.

Hydrogen is a non metal element. Atomic mass of it is 1.0079.

It's just 4.002602 amu

It's the mass of an atom expressed as a multiple of 1/12 of the mass of a carbon-12 atom at rest. Please see the link.

Isotopes of a element are simply versions of that same element with different count of neutron, with that in mind they take all of the isotopes of a specific element and average them together taking in account the percent abundance of each so the most common isotope is the one on the periodic table.

since the total is 68 we will subtract 42 to find the amount of oxygen which is 26. u can do this one of two ways

1- 42:26 is the ratio of nitrogen to oxygen in the following compound, so no it is not nitrous oxide because 42/26 = 1.62 while 7/4 = 1.75 close but not it

The atomic mass for cerium is approximately 140.12 atomic mass units.

They show that the periodic table isn't arranged on the basis of increasing atomic mass because iodine has a mass lesser than tellurium. Iodine has a mass of 126.90 and tellurium has a mass of 127.60.

in russia

According to an Answers.com search for "Gustav Kirchhoff", the spectroscope was invented in Germany.

Ooooh, SO close..... Tungsten has an average atomic mass of 183.84, accordng to Webelements.com.

Well, to be precise, no atom has a fractional atomic mass; the fractional numbers are based on proportions of atoms with 74 protons and some varying number of neutrons from 106 to 112 neutrons. The most prevalent numbers are 110, 112, and 108 neutrons, in that order.

When they are of the same element.

Suren the answer be chlorine? Atomic chlorine?

The element with an atomic number of 51 is Sb - Antimony; atomic weight = 121.75.

Addition of number of protons and neutrons.Mass of Electrons is neglected.

The atomic mass of hydroxide (rounding) is 17.008 atomic mass of oxygen 16.00 + atomic mass of hydrogen 1.008

When the number of neutrons changes, the atomic mass will change.

because it's an average of various isotopes, in proportion in which they exist in nature

Indium (In) has an atomic mass of 114.818g/mol

Magnesium is a meta element. Atomic mass of it is 24.

The metal cautions easily slide past one another.

Bismuth Bi and polonium Po both have an average atomic mass of 209 amu

The atomic number of magnesium is 12 and the mass number is 24.305

use the Periodic Table it gives you all the info you need :D

There are multiple elements of the Periodic Table which have 4 isotopes. These are further broken down into three which have unstable isotopes, and 6 that do not decay. The 6 that are stable are strontium (Sr), lead (Pb), cerium (Ce), iron (Fe), chromium (Cr) and sulphur (S).