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# lithium has an atomic number of 3

Lithium is an alkali metal with the atomic number = 3 and an atomic mass of 6.941 g/mol. This means that lithium has 3 protons, 3 electrons and 4 neutrons (6.941 – 3 = ~4).

• ### True or false? If lithium has an atomic number of 3, then it will …

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https://homework.study.com › explanation
Therefore, lithium has an atomic number 3 means that it has a total of 3 electrons. According to the electron configuration, the first energy level will have …
• Notice that because the lithium atom always has 3 protons, the atomic number for lithium is always 3. The mass number, however, is 6 in the isotope with 3 …
• ## Does a lithium atom have an atomic number of 3 and a mass of 7?

Lithium, for example, has three protons and four neutrons, giving it a mass number of 7. Knowing the mass number and the atomic number of an atom allows you to determine the number of neutrons present in that atom by subtraction.

## What has an atomic number of 3?

Atomic Number Symbol Name
1 H Hydrogen
2 He Helium
3 Li Lithium
4 Be Beryllium

## What has an atomic number of 3 and a mass number of 7?

The atomic number of Lithium is 3, its mass number is 7.5 ngày trước

## Is lithium has an atomic number of 3 then it will have one valence electron?

Answer and Explanation: The answer is True . The atomic number of an element represents the total number of electrons the element has. Therefore, lithium has an atomic number 3 means that it has a total of 3 electrons.

## What has an atomic number of 3 and a mass of 7?

Lithium (Li) has an atomic number of 3, an atomic mass of approximately 6.941, and a mass number of 7.

## Is 7 the atomic mass of lithium?

Lithium-7 atom is the stable isotope of lithium with relative atomic mass 7.016004, 92.5 atom percent natural abundance and nuclear spin 3/2.

## How many neutrons does lithium-7 have if the atomic number is 3?

As seen on a periodic table, Lithium has an atomic mass of 7. We know the proton number is 3, so 7-3 = 4, is our number of neutrons.

## What atom has an atomic mass of 7?

Atomic Mass Name chemical element number
10.811 Boron 5
12.0107 Carbon 6
14.0067 Nitrogen 7
15.9994 Oxygen 8

## What has an atomic number of 3 and a mass of 7?

Lithium (Li) has an atomic number of 3, an atomic mass of approximately 6.941, and a mass number of 7.

## What element has 3 protons and a mass number of 7?

One of the stable isotopes of lithium has 3 protons and 4 neutrons, so its atomic mass is 7.

## Does lithium have an atomic number of 3 and a mass number of 7?

Lithium is an alkali metal with the atomic number = 3 and an atomic mass of 6.941 g/mol. This means that lithium has 3 protons, 3 electrons and 4 neutrons (6.941 – 3 = ~4).

## How many neutrons are in the atomic number of 3 and mass number 7?

As seen on a periodic table, Lithium has an atomic mass of 7. We know the proton number is 3, so 7-3 = 4, is our number of neutrons. Finally, as an atom is neutral in charge, the protons (positive charge) equal the number of electrons (negative charge).

## What element has an atomic mass of 3?

Atomic Mass Name chemical element number
1.0079 Hydrogen 1
4.0026 Helium 2
6.941 Lithium 3
9.0122 Beryllium 4

## What is an element of 3?

The 3rd Element in the modern periodic table is Lithium (Li). The atomic number of Lithium is 3.

## Does lithium have an atomic number of 3?

Lithium is an alkali metal with the atomic number = 3 and an atomic mass of 6.941 g/mol. This means that lithium has 3 protons, 3 electrons and 4 neutrons (6.941 – 3 = ~4). Being an alkali metal, lithium is a soft, flammable, and highly reactive metal that tends to form hydroxides.

## What group is atomic number 3 in?

Atomic Number 39 Y Yttrium 3 5

## Does lithium have 1 valence electron?

Valence electrons for representative elements Lithium has a single electron in the second principal energy level, and so we say that lithium has one valence electron.

## Does lithium have 3 valence electrons?

Lithium possess one valence electron. The atomic number of lithium is 3. The electronic configuration of lithium is 2,1.

## What are 3 elements that have 1 valence electron?

A: Any element in group 1 has just one valence electron. Examples include hydrogen (H), lithium (Li), and sodium (Na).

## Does lithium have an atomic number of 3?

Lithium is an alkali metal with the atomic number = 3 and an atomic mass of 6.941 g/mol. This means that lithium has 3 protons, 3 electrons and 4 neutrons (6.941 – 3 = ~4). Being an alkali metal, lithium is a soft, flammable, and highly reactive metal that tends to form hydroxides.

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