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jekas [21]
3 years ago
13

What's the equation of Francium – 223 returned to the ground state?

Chemistry
1 answer:
Inessa [10]3 years ago
8 0

Answer:

22387Fr→22388Ra+0−1e+00ν

Explanation:

β-decay is the decay of a neutron into a proton, which keeps the total mass the same, but increases the number of protons by 1. β-decay does this by releasing an electron, which conserves charge, and a neutrino.

Francium-223 has an atomic number of 87, so is written as

22387Fr

If the atomic number then increases by 1 to become 88, then it is a new element. Looking at the periodic table, element 88 is radium, Ra.

In the form of an equation, this is shown as

22387Fr→22388Ra+0−1e+00ν

You can check this is correct by adding up the top numbers on each side and equating them, and doing the same with the bottom numbers.

223=223+0+0

87+88+(−1)+0

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Identify what kind of ligand (weak or strong), what kind of wavelength (long or short), what kind of spin (high spin or low spin
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Answer:

See explanation

Explanation:

Whether a ligand is strong or weak highly depends on its position in the spectrochemical series. Ligands that are found towards the left hand side of the series are weak field ligands while ions that occur towards the right hand side of the series are strong field ligands. The spectrochemical series is an arrangement of ligands in order of increasing magnitude of crystal field splitting.

Most of the strong field ligands have strong pi bonds and are capable producing greater crystal field splitting.

NH3, an and NO2 are all strong field ligands hence they produce long wavelengths and lead to the formation of diamagnetic complexes.

7 0
3 years ago
Please Solve this! I need help
Delicious77 [7]

Answer:

To plot a graph, you put the independent variable on the y-axis and the dependent on the x-axis. This might sound really hard, but it's not.

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You write the graph so that Time (1-10) goes up the side (the y-axis), starting from the bottom left (this point is called the origin). Then you write the Temperature on the bottom, from left to right. The numbers you are given have to have the same amount of points (the little squares you see) in between them, and you have to be able to fit all of the numbers on the graph.

The last step is to plot the points on the graph so they match up. If the time is 1, then you go to where the time says one and move over to the right to where it is the correct temperature. That is where you put your point. You keep doing this until you have all the points plotted and you can connect the dots.

Explanation:

8 0
3 years ago
How many protons and electrons are there in a neutral atom of each of the following elements?a. carbonb. fluorinec. tind. nickel
Zolol [24]

Answer:

a.Carbon :proton number =6

             electron number =6

b. Fluorine: proton number=9

                  electron number =9

c. tin:  proton number=50

           electron number =50

d. nickel:proton number=28

           electron number =28

Explanation:

In the neutral state of an atom the number of protons is always equal to the number of electrons and that whats makes it electrically neutral as the positive charges of protons balances the negative charges of electrons.

7 0
3 years ago
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Ipatiy [6.2K]

Answer:

Hydrogen ion concentration is more conveniently expressed as pH, which is the logarithm of the reciprocal of the hydrogen ion concentration in gram moles per liter. 

Explanation:

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7 0
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The changes in matter/energy can be classified as follows:

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<h3>What are physical, chemical and nuclear changes?</h3>

Matter and energy undergo physical, chemical and nuclear changes.

Physical changes are changes in which no new product is formed.

Chemical changes are changes in which no new product is formed.

Nuclear changes are changes in which no new product is formed.

Examples of each of the given changes is as follows:

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  • Nuclear changes - production of elements in the stars

Therefore, matter/energy undergo changes.

Learn more about changes in matter at: brainly.com/question/3998772

#SPJ1

8 0
2 years ago
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