Which Part of a Calcium Atom in the Ground State?

The parts of a calcium atom in the ground state are the nucleus, the electrons, and the electron shells. The nucleus contains the protons and neutrons, and the electrons orbit the nucleus in shells. The ground state of a calcium atom is the lowest energy state of the atom, and it is the state in which the atom is most stable. The electrons in the ground state are in the lowest energy levels, and they are in the orbitals that are closest to the nucleus.

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The ground state of an atom is the lowest energy state that the atom can be in. The ground state of a calcium atom is the electronic configuration 1s2 2s2 2p6 3s2 3p6 4s2. This means that the atom has two electrons in the 1s orbital, two electrons in the 2s orbital, six electrons in the 2p orbital, two electrons in the 3s orbital, six electrons in the 3p orbital, and four electrons in the 4s orbital.

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In its ground state, a calcium atom has 20 electrons. This is because calcium has an atomic number of 20, meaning it has 20 protons in its nucleus. The number of electrons in an atom is equal to the number of protons in the nucleus, unless the atom is ionized.

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Part 1

The electron configuration of a calcium atom in its ground state is 2,8,8,2. This can be represented using the following orbital diagram.

Ca atom

1s 2s 2p 3s 3p

ground state

−∞ −∞ −∞ −∞

Ca

↑↑

2↓ 8↑

2↓ 8↑ 2↓

The first orbital contains two electrons, the second and third orbitals each contain eight electrons, and the fourth orbital contains two electrons.

This electron configuration can be abbreviated as [Ar] 4s2 3d2, where [Ar] is the symbol for the argon atom, which has the same electron configuration. The 4s orbital is lower in energy than the 3d orbitals, so the four electrons in the ground state fill the 4s orbital first.

Part 2

The electron configuration of a calcium atom in its excited state is 2,8,8,3. This can be represented using the following orbital diagram.

Ca atom

1s 2s 2p 3s 3p

excited state

−∞ −∞ −∞ −∞

Ca

↑↑↑

2↓ 8↑

2↓ 8↑ 3↓

The first orbital contains two electrons, the second and third orbitals each contain eight electrons, and the fourth orbital contains three electrons.

This electron configuration can be abbreviated as [Ar] 4s2 3d3, where [Ar] is the symbol for the argon atom, which has the same electron configuration. The 4s orbital is lower in energy than the 3d orbitals, so the four electrons in the excited state fill the 4s orbital first. The third electron goes into the 3d orbital.

On a similar theme: Ground State Electron Configuration

A calcium atom has 20 protons in its ground state.

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A calcium atom has 20 neutrons in its ground state. This is because a calcium atom has an atomic number of 20 (which designates the number of protons in the nucleus), and the number of protons in the nucleus determines the number of electrons in the atom. The number of electrons in an atom equals the number of protons in the nucleus. The number of neutrons in an atom's nucleus equals the number of protons in the nucleus minus the number of electrons in the atom. Therefore, a calcium atom has 20 neutrons in its nucleus.

A calcium atom has a mass of 40.078 amu (atomic mass units). This is the atomic mass of an unbound, neutral calcium atom in its ground state. The mass of an atom is determined by the number of protons in its nucleus. The number of protons in a calcium atom's nucleus is 20, so the atomic mass of calcium is 20 amu. This is the mass of a calcium atom in its ground state.

Calcium is a chemical element with the atomic number 20. This means that there are 20 protons in the nucleus of every calcium atom. The radius of an atom is determined by the size of its nucleus. The radius of a calcium atom in its ground state is therefore determined by the size of its nucleus.

The size of an atom's nucleus is determined by the number of protons it contains. The more protons an atom has, the larger its nucleus will be. The radius of a calcium atom in its ground state is therefore determined by the number of protons it contains. The radius of a calcium atom in its ground state is therefore 2.8 picometers.

The radius of an atom is a measure of the size of its nucleus. The larger the nucleus, the larger the radius. Theradius of a calcium atom in its ground state is 2.8 picometers. This means that the nucleus of a calcium atom in its ground state is 2.8 picometers in diameter.

The radius of a calcium atom in its ground state is 2.8picometers. This is the distance from the center of the nucleus to the edge of the atom.

A calcium atom in its ground state has a charge of +2. This is because the atom has two protons in its nucleus, and two electrons orbiting around the nucleus. The protons have a positive charge, and the electrons have a negative charge. The overall charge of the atom is therefore neutral.

A calcium atom has 20 protons in its nucleus, and thus its atomic number is 20. The ground state of an atom is its lowest energy state. In the case of calcium, this is achieved when the atom has 2 electrons in its innermost orbital and 8 electrons in its second orbital. The spin of an atom is a measure of its angular momentum. The spin of a calcium atom in its ground state is therefore 2 x (1/2) + 8 x (1/2) = 5.