## What are the 7 atomic elements?

There are seven diatomic elements: hydrogen, nitrogen, oxygen, fluorine, chlorine, iodine, bromine.

## What is the atomic mass of 1 to 20 elements?

Atomic Number of Elements from 1 to 30

Atomic Number Element Atomic Mass
18 Argon 39.948
19 Potassium 39.098
20 Calcium 40.078
21 Scandium 44.956

What element has an atomic mass of 4?

Beryllium
The elements of the periodic table sorted by atomic mass

Atomic Mass Name chemical element number
6.941 Lithium 3
9.0122 Beryllium 4
10.811 Boron 5
12.0107 Carbon 6

How do we find the atomic mass of an element?

Together, the number of protons and the number of neutrons determine an element’s mass number: mass number = protons + neutrons. If you want to calculate how many neutrons an atom has, you can simply subtract the number of protons, or atomic number, from the mass number.

### What are the 1 to 30 elements and their symbols?

The first 30 elements in the periodic table with their symbols are tabulated below….What are the 30 Elements.

Name of the Element Symbol
Nitrogen N
Oxygen O
Fluorine F
Neon Ne

### Is atomic mass a unit?

An atomic mass unit is defined as a mass equal to one twelfth the mass of an atom of carbon-12. The mass of any isotope of any element is expressed in relation to the carbon-12 standard. For example, one atom of helium-4 has a mass of 4.0026 amu. An atom of sulfur-32 has a mass of 31.972 amu.

Which one is atomic number and mass number?

Calculating numbers of subatomic particles The symbol for an atom can be written to show its mass number at the top, and its atomic number at the bottom.

How do you calculate atomic number of an element?

Locate the elementâ€™s atomic number. The atomic number is located above the element symbol, in the upper left-hand corner of the square. The atomic number will tell you how many protons make up a single atom of an element. For example, boron (B) has an atomic number of 5, therefore it has 5 protons.

## What element has an atomic mass of 16?

The name of element 16 is sulfur, with an element symbol S. Its atomic mass is 32.06. The elementâ€™s name is spelled either sulfur ( IUPAC ) or sulphur (older spelling and still used in some countries).

## How do you find atomic mass?

The easiest way to find the atomic mass is to look it up on a periodic table. The atomic mass for each element is given in atomic mass units or grams per mole of atoms. This value is the average atomic mass of the element. This is because elements may have more than one naturally occurring isotope.

What is the atomic mass of elements?

The atomic mass of the atom is the mass of the protons plus the mass of the neutrons, 6 + 7, or 13. The atomic mass of an element is a weighted average of all the element’s isotopes based on their natural abundance. It is simple to calculate the atomic mass of an element with these steps.