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 …
An atom contains 3 protons, 3 electrons and 4 neutrons. Find …
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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.
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What has an atomic number of 3?
| Atomic Number | Symbol | Name |
|---|---|---|
| 1 | H | Hydrogen |
| 2 | He | Helium |
| 3 | Li | Lithium |
| 4 | Be | Beryllium |
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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
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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.
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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.
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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.
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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.
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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 |
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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.
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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.
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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).
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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).
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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 |
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What is an element of 3?
The 3rd Element in the modern periodic table is Lithium (Li). The atomic number of Lithium is 3.
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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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What group is atomic number 3 in?
| Atomic Number | 39 |
|---|---|
| Chemical Symbol | Y |
| Element Name | Yttrium |
| Group | 3 |
| Period | 5 |
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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.
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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.
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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).
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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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