Atomic Mass

Krypton is a non metal element. Atomic mass of it is 84.

The gram atomic mass of sulfur is 32.1 grams per mole. This value is calculated based on the atomic weight of sulfur, which is 32.06 g/mol.

Since the atom is electrically neutral, the number of electrons must be the same as the number of protons in the atom, which is the definition of atomic number. Therefore, there are 9 electrons.

The atomic mass of an element is the weighted average mass of its isotopes. To determine the atomic mass of element F, you would need to know the abundance of each isotope and its individual atomic mass, and then calculate the weighted average based on those values.

Z is atomic number

A is atomic mass

N is number of neutrons

Z=A-N

79 = 179 - N

179-79=100

so number of neutrons is equal to 100

This is one thing you can get from that given.

The true statements are A and B. Statement A is called Avogadro's number and represents the number of particles in one mole. Statement B refers to the molar mass, which is the mass of 1 mole of a substance expressed in grams, and is numerically equal to the atomic mass in atomic mass units (amu).

The atomic mass of dubnium (Db) is approximately 268. It is a synthetic element with an atomic number of 105.

Chromium has an atomic mass of 52.00 a.m.u.

Hydrogen has 1 as its atomic number. That's because it has one proton in its nucleus. Hydrogen has three isotopes. Each isotope has one proton in its nucleus (naturally, because that's what makes it hydrogen). Atomic mass is the number of protons plus the number of neutrons in an atom's nucleus. Let's look at each isotope of hydrogen. "Simple" hydrogen has only the 1 proton in its nucleus. It's atomic number is 1 and its mass number is 1 (the 1 proton plus zero neutrons). Heavy hydrogen has 1 proton and 1 neutron in its nucleus. It's atomic number is 1 and its mass number is 2 (the 1 proton plus 1 neutron). Heavy, heavy hydrogen has 1 proton and 2 neutrons in its nucleus. It's atomic number is 1 and its mass number is 3 (the 1 proton plus 2 neutrons).

The atomic mass of hydrogen is approximately 1 atomic mass unit, the atomic mass of nitrogen is approximately 14 atomic mass units, and the atomic mass of oxygen is approximately 16 atomic mass units.

Cobalt has an atomic mass of 58.933195(5) while nickel has an atomic mass of 58.6934(4). Nickel has the lower atomic mass.

Hydrogen - H - 1 - 1

Helium - He - 2 - 4

Lithium - Li - 3 - 7

Berelium - Be - 4 - 9

Boron - B - 5 - 11

Carbon - C - 6 - 12

Nitrogen - N - 7 - 14

Oxygen - O - 8 - 16

Fluorine - F - 9 - 19

Neon - Ne - 10 - 21

Sodium - Na - 11 - 23

Magnesium - Mg - 12 - 24

Aluminium - Al - 13 - 27

Silicon - Si - 14 - 28

Phosphorous - P - 15 - 31

Sulfur - S - 16 - 32

Chlorine - Cl - 17 - 35.5

Argon - Ag - 18 - 36

Potassium - K - 19 - 39

Calcium - Ca - 20 - 40

Scandium - Sc - 21 - 45

Vanadium - Vn - 22 - 48

Titanium - Ti - 23 - 51

Vanadium - Vn - 24 - 52

Manganese - Mn - 25 - 55

Iron - Fe - 26 - 56

Cobalt - Co - 27 - 59

Nickle - Ni - 28 - 59

Copper - Cu - 29 - 64

Zinc - Zn - 30 - 65

Carbon is a chemical element with an atomic number of 6 and an atomic mass of about 12.011 atomic mass units.

The element that has the closest mass to 89 is Yttrium(88.91).

Well, two times four is eight, which would be oxygen.

The mass number is the sum between the number of protons and the number of neutrons in the nucleus of an isotope. The mass number is always a whole number.

You are probably getting confused between mass number, atomic weight and atomic number.

But if you think to atomic weight the answer is:

1. For example, chlorine has a listed atomic weight of 35.453. This is not, however, the mass of every chlorine atom. It is the "average" mass of a chlorine atom. There are two stable isotopes of chlorine, namely 35Cl and 37Cl which exist in the world at the corresponding percentages: (75.78%) and (24.22%). Since roughly one quarter of chlorines have 2 more amu, it makes sense that the atomic weight given is almost 35.5, which would be one quarter of the difference between 37 and 35. It is important to note again, however, that this is an average and not the mass of any actual chlorine atoms. (Also to note, there are other forms of chlorine in very minimal quantities which shift the number slightly, but not noticeably.)

2. Another important cause is the mass deffect (due to the binding energy of nucleons).

No, the element with the largest atomic mass is not always present in the highest percentage by mass in a compound. The percentage by mass of an element in a compound is determined by its atomic mass and the total mass of the compound. The composition of a compound can vary based on the number of atoms of each element present.

The atomic mass of an element is determined by the sum of the protons and neutrons in its nucleus. Beryllium has 4 protons and typically 5 neutrons, resulting in a total of 9 nucleons (protons + neutrons). This is why its atomic mass is 9 instead of 8.

The mass of the proton is a little greater than 1 amu:

The atomic mass subtracting the number of protons is equal to the number of neutrons in an atom. Neutrons help stabilize the nucleus and contribute to the overall mass of the atom without affecting its chemical properties.

Bromine is a non metal element. Atomic mass of it is 80.

Expressing atomic mass against a standard allows for uniformity and comparability between different elements. By using a standard reference point, such as carbon-12, scientists can accurately measure and compare the relative masses of different elements. This ensures consistency in scientific experiments and calculations.

The relative atomic mass of electrons is considered negligible, as they are much lighter than protons and neutrons. Protons and neutrons each have a relative atomic mass of approximately 1, as they are found in the nucleus of an atom and contribute to its overall mass.

Cobalt has a lower atomic mass than lead. The atomic mass of cobalt is approximately 58.93 g/mol, whereas the atomic mass of lead is about 207.2 g/mol.