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Lemur [1.5K]
2 years ago
11

Determine the element of lowest atomic number that contains a complete d subshell in the ground state. element symbol:

Chemistry
2 answers:
allsm [11]2 years ago
8 0

The component with the most low atomic number that contains a total d-subshell in the ground state is copper. Copper's electron arrangement is [Ar]3d104s1 [ A r ] 3d 10 4 s 1 .  

Further Explanation:  

atomic number:  

The nuclear number or proton number (image Z) of a synthetic component is the quantity of protons found in the core of a particle. It is indistinguishable from the charge number of the core. The nuclear number particularly distinguishes a compound component. In an uncharged iota, the nuclear number is likewise equivalent to the quantity of electrons.  

The elemenents of the intermittent table arranged by atomic mass:  

atomic Mass    Name substance element          Number  

1.0079                          Hydrogen                            1  

4.0026                            Helium                                    2  

6.941                           Lithium                                    3  

9.0122                           Beryllium                                    4  

atomic number speak to:  

The nuclear number (otherwise called the proton number) is the quantity of protons found in the core of an iota. It is customarily spoken to by the image Z. The nuclear number exceptionally distinguishes a substance component. In a particle of impartial charge nuclear number is equivalent to the quantity of electrons.  

Meaning of subshell:  

A subshell is a subdivision of electron shells isolated by electron orbitals. Subshells are marked s, p, d, and f in an electron design.

Subject: chemistry  

Level: High School

Keywords: atomic number, The elemenents of the intermittent table arranged by atomic mass, atomic number speak to, Meaning of subshell.  

Related links:  

Learn more about evolution on

brainly.com/question/8574523

brainly.com/question/8997547

ollegr [7]2 years ago
5 0

The element that contains a complete d subshell in the ground state : <u>Cu</u>

<h3>Further explanation </h3>

In an atom, there are energy levels in the shell and sub shell.

This energy level is expressed in terms of electron configurations.

Writing the electron configuration starts from the lowest to the highest subshell's energy level (following Aufbau rules)

Electron filling in subshells using the following sequence

1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d¹⁰, 4p⁶, 5s², 4d¹⁰, 5p⁶, 6s², etc.

And the element whose electron configuration occupies the sub shell d lies in the transition group or group B in the periodic system

Electrons can move the shell up or down by releasing energy or absorbing energy

So it can be concluded that there are 2 conditions:

Ground state is the state of electrons filling shell with the lowest energy levels.

Excited state is the state of electrons which occupies a higher energy level

In filling electrons in subshell d there are half-full and full rules because of the tendency of electrons to get stability (not following the Aufbau rule)

Example

Cr atomic number 24: [Ar] 4s² 3d⁴ [Ar] 4s¹ 3d⁵

Cu atomic number 29: [Ar] 4s² 3d⁹ [Ar] 4s¹ 3d¹⁰

Mo atomic number 42: [Cr] 5s² 4d⁴ [Cr] 5s¹ 4d⁵

So the element of the lowest atomic number that contains a complete subshell in the ground state has an electron configuration

1s², 2s², 2p⁶, 3s², 3p⁶, 4s¹, 3d¹⁰

which is owned by the element Cu

<h3>Learn more  </h3>

electron transitions  

brainly.com/question/2079874  

the locations and properties of two electrons  

brainly.com/question/2292596  

It's sublevel  

brainly.com/question/4520082  

a possible full set of quantum numbers  

brainly.com/question/5389767  

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From the chemical equation given:

H2SO4+2KOH--->K2SO4+2H2O

the two reactants, H2SO4 and KOH, are in 1:2 stoichiometric ratio.

No. of moles of KOH = 2* no. of moles of H2SO4

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A 3.140 molal solution of NaCl is prepared. How many grams of NaCl are present in a sample containing 2.692 kg of water
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Answer:

494.49 g of NaCl.

Explanation:

Data obtained from the question include the following:

Molality of NaCl = 3.140 m

Mass of water = 2.692 kg

Mass of NaCl =.?

Next, we shall determine the number of mole of NaCl in the solution.

Molality is simply defined as the mole of solute per unit kilogram of solvent. Mathematically, it is expressed as

Molality = mole of solute /Kg of solvent

With the above formula, we can obtain the number of mole NaCl in the solution as follow:

Molality of NaCl = 3.140 m

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Molality = mole of solute /Kg of solvent

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Cross multiply

Mole of NaCl = 3.140 x 2.692

Mole of NaCl = 8.45288 moles

Finally, we shall covert 8.45288 moles of NaCl to grams. This can be obtained as follow:

Mole of NaCl = 8.45288 moles

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Mass of NaCl = 8.45288 × 58.5

Mass of NaCl = 494.49 g.

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D. Two electrons in its first energy level; eight electrons in its second energy level; six valence electrons in its outermost energy level.

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Answer:

The mass of the jar and contents remained the same after the metal was burned.

Explanation:

My prediction about the experimental results is that  the mass of the jar and contents remained the same after the metal was burned in the jar.

This is compliance with the law of conservation of mass which states that in a chemical reaction, matter is neither created nor destroyed by bonds are rearranged for new compounds to form.

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What does a bond do?
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Answer:

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Explanation:

I hope this helps

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