QuestionWhat first transition metal has a $\mathrm{M}^{2+}$ ion with four electrons in the $3 d$ subshell?

Studdy Solution

STEP 1

Assumptions1. The ion is a doubly positive ion, denoted as $\mathrm{M}^{+}$ . . The ion is derived from a metal in the first transition metal series.
3. The ion has four electrons in the $3d$ subshell.

STEP 2

The first transition metal series includes the elements Scandium (Sc) to Zinc (Zn) in the periodic table. These elements have atomic numbers from21 to30.

STEP 3

The number of electrons in a neutral atom is equal to its atomic number. For a $\mathrm{M}^{2+}$ ion, the number of electrons is two less than the atomic number of the metal.

STEP 4

The $3d$ subshell can hold up to10 electrons. In this case, the $\mathrm{M}^{2+}$ ion has four electrons in the $3d$ subshell.

STEP 5

Since the $\mathrm{M}^{2+}$ ion has four electrons in the $3d$ subshell, the neutral atom of the metal must have had six electrons in the $3d$ subshell.

STEP 6

The first transition metal series starts filling the $3d$ subshell from Scandium (Sc, atomic number21). However, Scandium has only one electron in the $3d$ subshell.

STEP 7

The element with six electrons in the $3d$ subshell is Chromium (Cr, atomic number24).

STEP 8

Therefore, the metal $M$ from which the $\mathrm{M}^{2+}$ ion is derived is Chromium (Cr).
The element might be Chromium.

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QuestionWhat first transition metal has a $\mathrm{M}^{2+}$ ion with four electrons in the $3 d$ subshell?

Studdy Solution

STEP 1

Assumptions1. The ion is a doubly positive ion, denoted as $\mathrm{M}^{+}$ . . The ion is derived from a metal in the first transition metal series.
3. The ion has four electrons in the $3d$ subshell.

STEP 2

The first transition metal series includes the elements Scandium (Sc) to Zinc (Zn) in the periodic table. These elements have atomic numbers from21 to30.

STEP 3

The number of electrons in a neutral atom is equal to its atomic number. For a $\mathrm{M}^{2+}$ ion, the number of electrons is two less than the atomic number of the metal.

STEP 4

The $3d$ subshell can hold up to10 electrons. In this case, the $\mathrm{M}^{2+}$ ion has four electrons in the $3d$ subshell.

STEP 5

Since the $\mathrm{M}^{2+}$ ion has four electrons in the $3d$ subshell, the neutral atom of the metal must have had six electrons in the $3d$ subshell.

STEP 6

The first transition metal series starts filling the $3d$ subshell from Scandium (Sc, atomic number21). However, Scandium has only one electron in the $3d$ subshell.

STEP 7

The element with six electrons in the $3d$ subshell is Chromium (Cr, atomic number24).

STEP 8

Therefore, the metal $M$ from which the $\mathrm{M}^{2+}$ ion is derived is Chromium (Cr).
The element might be Chromium.

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QuestionWhat first transition metal has a M2+\mathrm{M}^{2+}M2+ ion with four electrons in the 3d3 d3d subshell?

Studdy Solution

STEP 1

Assumptions1. The ion is a doubly positive ion, denoted as M+\mathrm{M}^{+}M+. . The ion is derived from a metal in the first transition metal series.3. The ion has four electrons in the 3d3d3d subshell.

STEP 2

The first transition metal series includes the elements Scandium (Sc) to Zinc (Zn) in the periodic table. These elements have atomic numbers from21 to30.

STEP 3

The number of electrons in a neutral atom is equal to its atomic number. For a M2+\mathrm{M}^{2+}M2+ ion, the number of electrons is two less than the atomic number of the metal.

STEP 4

The 3d3d3d subshell can hold up to10 electrons. In this case, the M2+\mathrm{M}^{2+}M2+ ion has four electrons in the 3d3d3d subshell.

STEP 5

Since the M2+\mathrm{M}^{2+}M2+ ion has four electrons in the 3d3d3d subshell, the neutral atom of the metal must have had six electrons in the 3d3d3d subshell.

STEP 6

The first transition metal series starts filling the 3d3d3d subshell from Scandium (Sc, atomic number21). However, Scandium has only one electron in the 3d3d3d subshell.

STEP 7

The element with six electrons in the 3d3d3d subshell is Chromium (Cr, atomic number24).

STEP 8

Therefore, the metal MMM from which the M2+\mathrm{M}^{2+}M2+ ion is derived is Chromium (Cr).The element might be Chromium.

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QuestionWhat first transition metal has a $\mathrm{M}^{2+}$ ion with four electrons in the $3 d$ subshell?

Assumptions1. The ion is a doubly positive ion, denoted as $\mathrm{M}^{+}$ . . The ion is derived from a metal in the first transition metal series.
3. The ion has four electrons in the $3d$ subshell.

The number of electrons in a neutral atom is equal to its atomic number. For a $\mathrm{M}^{2+}$ ion, the number of electrons is two less than the atomic number of the metal.

The $3d$ subshell can hold up to10 electrons. In this case, the $\mathrm{M}^{2+}$ ion has four electrons in the $3d$ subshell.

Since the $\mathrm{M}^{2+}$ ion has four electrons in the $3d$ subshell, the neutral atom of the metal must have had six electrons in the $3d$ subshell.

The first transition metal series starts filling the $3d$ subshell from Scandium (Sc, atomic number21). However, Scandium has only one electron in the $3d$ subshell.

The element with six electrons in the $3d$ subshell is Chromium (Cr, atomic number24).

Therefore, the metal $M$ from which the $\mathrm{M}^{2+}$ ion is derived is Chromium (Cr).
The element might be Chromium.