All categories

2 years ago

Specify the number of protons, neutrons, and electrons in the neutral atom chromium-52

Chemistry

2 answers:

zhuklara [117]2 years ago

4 0

<h2>A neutral chromium – 52 atom has 24 protons, 24 electrons and 28 neutrons. </h2>

Further Explanation

The given substance, chromium – 52, is an isotope of chromium. The way it is written is called the hyphen notation of an isotope.

An isotope is like a version of an atom that has a different number of neutrons.

The hyphen notation gives the name of the element and the mass number of the isotope is written after the hyphen.
The mass number gives information about the number of neutrons an atom has. It is the total number of protons and neutrons that are found in the nucleus of an atom.

In this case, the nucleus of the chromium – 52 atom has a total of 52 subatomic particles in it.

<u>Determining the Number of Neutrons in an Atom </u>

To determine how many of the particles in the nucleus are neutrons, the atomic number of the atom is used.

Atomic number is the number that gives the atom its identity and can be found in the periodic table. It gives the number of protons in an atom.

In the most simple periodic table of elements, the atomic number is usually the smaller number written in the tile for each element. The larger number is the mass number.

It can be observed that the atomic number of the elements are increasing by one unit as you go from left to right.

The difference between the larger mass number and the smaller atomic number is the number of neutrons:

<em>Number of Neutrons = Mass Number - Atomic Number </em>

The atomic number of chromium is 24, therefore, its number of neutrons can be determined using the equation:

<em>Number of Neutrons = 52 – 24 </em>
<em>Number of Neutrons = 29. </em>

<u>Determining the Number of Electrons in an Atom </u>

The number of electrons in a neutral atom is equal to the number of protons. Since the number of protons is equal to an element’s atomic number, then the number of electrons is:

<em>Number of electrons = Number of protons = Atomic Number </em>

Since chromium has an atomic number of 24, then it has 24 protons and 24 electrons.

<h3>Therefore, it has been determined that the chromium – 52 atom has 28 neutrons 24 protons and 24 electrons. </h3>

Learn More

Periodic Table brainly.com/question/2376134

Isotopes brainly.com/question/1698344

Keywords: protons, neutrons, electrons, mass number, atomic number, hyphen notation

Alborosie2 years ago

3 0

Its has 24 protons, 24 electrons, and 28 nuetrons

You might be interested in

WILL MARK BRAINLIEST please

astra-53 [7]

Answer:

C is the only reasonable answer.. but this is 6th grade science and I'm in 7th, so I'm pretty sure I'm right

5 0

2 years ago

Consider the following reaction where Kc = 1.80×10-2 at 698 K:

Klio2033 [76]

Answer:

The system is not in equilibrium and the reaction must run in the forward direction to reach equilibrium.

Explanation:

The reaction quotient Qc is a measure of the relative amount of products and reagents present in a reaction at any given time, which is calculated in a reaction that may not yet have reached equilibrium.

For the reversible reaction aA + bB⇔ cC + dD, where a, b, c and d are the stoichiometric coefficients of the balanced equation, Qc is calculated by:

$Qc=\frac{[C]^{c}*[D]^{d} } {[A]^{a}*[B]^{b}}$

In this case:

$Qc=\frac{[H_{2} ]*[I_{2} ] } {[HI]^{2}}$

Since molarity is the concentration of a solution expressed in the number of moles dissolved per liter of solution, you have:

$[H_{2} ]=\frac{2.09*10^{-2} moles}{1 Liter}$ =2.09*10⁻² $\frac{moles}{liter}$

$[I_{2} ]=\frac{4.14*10^{-2} moles}{1 Liter}$ =4.14*10⁻² $\frac{moles}{liter}$

$[I_{2} ]=\frac{0.280 moles}{1 Liter}$ = 0.280 $\frac{moles}{liter}$

So,

$Qc=\frac{2.09*10^{-2} *4.14*10^{-2} } {0.280^{2} }$

Qc= 0.011

Comparing Qc with Kc allows to find out the status and evolution of the system:

If the reaction quotient is equal to the equilibrium constant, Qc = Kc, the system has reached chemical equilibrium.

If the reaction quotient is greater than the equilibrium constant, Qc> Kc, the system is not in equilibrium. In this case the direct reaction predominates and there will be more product present than what is obtained at equilibrium. Therefore, this product is used to promote the reverse reaction and reach equilibrium. The system will then evolve to the left to increase the reagent concentration.

If the reaction quotient is less than the equilibrium constant, Qc <Kc, the system is not in equilibrium. The concentration of the reagents is higher than it would be at equilibrium, so the direct reaction predominates. Thus, the system will evolve to the right to increase the concentration of products.

Being Qc=0.011 and Kc=1.80⁻²=0.018, then Qc<Kc. <u><em>The system is not in equilibrium and the reaction must run in the forward direction to reach equilibrium.</em></u>

8 0

3 years ago

What are the main properties of liquids (in contrast to gases and solids)? check all that apply. check all that apply. liquids h

saw5 [17]

B is true because liquids are still more compact than gases, although they are loose, they aren't completely free. They also don't have a definite volume, making them assume the shape of their container. As for compression, liquids are harder to compress compared to gases.

5 0

3 years ago

How many atoms are contained in 5.77 grams of aluminum? Express your answer in exponential notation (Ex: 6.02*1023 would be ente

bagirrra123 [75]

Answer:

5.09

Explanation:

6 0

2 years ago

Which is the correct statement regarding the relative Rf values of the starting methyl benzoate vs the product, methyl m-nitrobe

Marianna [84]

Answer:

1. The product has a higher Rf value on a silica gel TLC plate because it is more polar than the starting methyl benzoate.

2. False

3. True

Explanation:

In chromatography, there is a stationary phase and a mobile phase. The ratio of the distance moved by a component and the distance moved by the solvent gives the retention factor (Rf).

Since silica gel is a polar solvent, it will retain the more polar product methyl m-nitrobenzoate compared to the methyl benzoate starting material.

In comparing the electrophillic aromatic substitution of m-nitrobenzoate and methyl benzoate, we must remember that the presence of electron withdrawing groups (such as -NO2 and -CHO) on the aromatic compound deactivates the compound towards electrophillic aromatic substitution hence, methyl m-nitrobenzoate is less reactive than methyl benzoate in Electrophilic Aromatic Substition and Methyl benzoate is less reactive than benzene in Electrophilic Aromatic Substition

5 0

2 years ago