# Is an atom containing 3 protons 4 neutrons 3 electrons its mass number?

## Is an atom containing 3 protons 4 neutrons 3 electrons its mass number?

and so three protons plus four neutrons Means that we have a mass number of seven. And so our final answer is here. Our mass number is seven.

### What is the mass of an atom that has 3 electrons 3 protons and 3 neutrons in amu?

For example, a lithium atom (Z=3, A=7 amu) contains three protons (found from Z), three electrons (as the number of protons is equal to the number of electrons in an atom), and four neutrons (7 – 3 = 4). “atomic number.”

#### What isotope has 3 protons and 3 electrons?

Lithium-7. Lithium-7 is by far the most abundant isotope of lithium, making up between 92.2% and 98.1% of all terrestrial lithium. A lithium-7 atom contains three protons, four neutrons, and three electrons.

What atom contains 4 protons 4 neutrons and 3 electrons?

Atomic Number

Name Protons Electrons
Helium 2 2
Lithium 3 3
Beryllium 4 4
Boron 5 5

Does lithium have 3 or 4 neutrons?

For instance, lithium exists as an isotope with 3 neutrons, and as an isotope with 4 neutrons, but it doesn’t exist as an isotope with 2 neutrons or as an isotope with 5 neutrons.

## What is the mass of a lithium atom that has 3 protons and 4 neutrons?

7
Lithium, for example has three protons and four neutrons, leaving it with a mass number of 7.

### What is an atom with 4 protons and 4 neutrons?

The element with atomic number 4 is beryllium, which means each atom of beryllium has 4 protons. A stable atom would have 4 neutrons and 4 electrons. Varying the number of neutrons changes the isotope of beryllium, while varying the number of electrons can make beryllium ions.

#### What isotope has 3 protons and 4 neutrons?

Lithium, for example has three protons and four neutrons, leaving it with a mass number of 7.

What element has 4 protons 4 neutrons and 4 electrons?

beryllium
The element with atomic number 4 is beryllium, which means each atom of beryllium has 4 protons. A stable atom would have 4 neutrons and 4 electrons.

What is o4 in the periodic table?

Beryllium – Element information, properties and uses | Periodic Table. Glossary. Allotropes.

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