Which equation represents alpha decay

Answers

Answer 1
Answer: The ones with 4 or 2 Helium ones

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Why is fusion nuclear energy currently not widely used as a source of electricity? Fusion reactions have not yet been achieved. Fusion reactions cannot be controlled. Fusion reactions require very high temperatures and pressure. Fusion reaction energy cannot be converted into electricity.

Carbon dioxide is formed when two oxygen atoms chemically combine with a carbon atom. Which term best describes carbon dioxide?

Answers

Carbon dioxide is a pure compound, consisting of two kinds of atoms that are bonded together.

If we know the total energy in a system is 30 j, and we know the PE is 20 j, what is the KE?

Answers

30j-20j= 10j 

The kinetic energy is 10 joules

The total energy is equivalent to PE+KE. Therefore the answer is 10 joules.

Look at the information in the chart and picture. What conclusion could you deduce from this information?

Answers

Answer:

Explanation:

From the given data on the table, I can easily say my weight is a function of the acceleration due to gravity at anywhere in the universe.

Weight is given as

     W = mg

m is the mass and g is the acceleration due to gravity.

Weight for a mass of 65kg would be the heighest on the surface of jupiter and it would be lowest on merury and mars due to their low value of g.

Answer:

The conclusion is that the mass is independent of gravity. However, the weight depends on the gravity value.

Explanation:

We have a girl with a mass of 65 kg. The picture has the gravity value for different planets. Weight (W) of a body is the product between the mass (M) and the gravity (g).

W = M*g.

According to the information we can mention that the weight of the girl will vary in all the planets. The highest weight will be for the highest gravity value of Jupiter with 25.9 m/s2. The lowest weight will be for Mercury and Mars with a gravity value of 3.7 m/s2.

It is important to mention that the mass of the girl will be the same in all the planets. However, the weight will vary according to the gravity variations.

Finally, The conclusion is that the mass is independent of gravity. However, the weight depends on the gravity value.    

What are the possible orbitals for n = 3?

Answers

For n = 3, the possible orbitals are:

  • 3s orbital
  • 3p orbitals
  • 3d orbitals

What are the possible orbitals

3s orbital: The 3s orbital is spherical in shape and can hold up to 2 electrons.

3p orbitals: The 3p orbitals have a dum/bb/ell shape and consist of three individual orbitals: 3px, 3p/y, and 3pz. Each of these orbitals can hold up to 2 electrons, so the total capacity of the 3p sublevel is 6 electrons.

3d orbitals: The 3d orbitals have complex shapes and consist of five individual orbitals: 3dxy, 3dxz, 3dyz, 3dx2-y2, and 3dz2. Each of these orbitals can also hold up to 2 electrons, resulting in a total capacity of 10 electrons for the 3d sublevel.

In summary, for n = 3, the possible orbitals are 3s, 3p (3px, 3py, 3pz), and 3d (3dxy, 3dxz, 3dyz, 3dx2-y2, 3dz2).

Learn more about orbitals  at

brainly.com/question/20319149

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Answer:The n = 3 shell, for example, contains three subshells: the 3s, 3p, and 3d orbitals. There is only one orbital in the n = 1 shell because there is only one way in which a sphere can be oriented in space.

Explanation:hope this helps:D

Which ion has the smallest radius?
(1) O2-
(2) S2-
(3) Se2-
(4) Te2-

Answers

Answer:


                  Option-1 (O²⁻) is the correct answer.


Explanation:

                       All given anions contains same charge. So, we can ignore the effect of charge on these anions.


As we know all given compounds belongs to same group (Group 6) in periodic table. And from top to bottom along the group the elements are placed as,


                                                          Oxygen O


                                                          Sulfur S


                                                          Selenium Se


                                                          Tellurium Te


Hence, moving from top to bottom along the group the number of shells increases. And with increase in number of shell the atomic or ionic radii increases. As Oxygen is present at the top of the group, therefore, it has the smallest radius due to less number of shells.

O²⁻ ion has the smallest radius

Further explanation

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

This energy level is expressed in the form of electron configurations.

Writing electron configurations starts from the lowest to the highest sub-shell energy level. There are 4 sub-shells in the shell of an atom, namely s, p, d and f. The maximum number of electrons for each sub shell is

  • s: 2 electrons
  • p: 6 electrons
  • d: 10 electrons and
  • f: 14 electrons

Charging electrons in the sub shell uses the following sequence:

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

Each sub-shell also has an orbital shown in the form of a square in which there are electrons symbolized by half arrows

The atomic radius shows the distance of the atomic nucleus to the electrons in the outer shell

From left to right in the period system the atomic radius gets smaller, while from one group from top to bottom the atomic radius gets longer

The more the number of shells the atom has, the radius of the atom getting longer, but if the number of shells is the same, the larger atomic number has shorter radius because the core charge is greater so that the attraction of the nucleus to the electrons is stronger

In the ions

(1) O²⁻

(2) S²⁻

(3) Se²⁻

(4) Te²⁻

All of these ions are ions from the elements of the VIA group in the periodic system. This group consists of oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and polonium (Po).

The periodic system is arranged in the order of atomic numbers, whereas in this VIA group from top to bottom, the atomic number gets bigger

  • Element O

Atomic Number: 8

Electron configuration: 1s² 2s² 2s⁴ (number of shells 2)

  • Element S

Atomic Number: 16

Electron configuration: [Ne] 3s² 3p⁴ (number of shells 3)

  • Element Se

Atomic Number: 34

Electron configuration: [Ar] 3d¹⁰ 4s²4p⁴ (number of shells 4)

  • Element Te

Atomic Number: 52

Electron configuration: [Cr] 4d10 5s² 5p⁴ (number of shells 5)

From the configuration of the electron shows that the lower the shell owned by the elements of the VIA group the greater (from 2 to 5) so that the radius is also getting longer/bigger

Because what is being asked is the radius of the ion, the electron configuration of each element is equally reduced by 2 electrons, but the number of shells remains the same

(1)O²⁻

Electron configuration: 1s² 2s² 2s²

(2) S²⁻

Electron configuration: [Ne] 3s² 3p²

(3) Se²⁻

Electron configuration: [Ar] 3d¹⁰ 4s²4p²

(4) Te²⁻

Electron configuration: [Cr] 4d¹⁰ 5s² 5p²

Because the amount of shell from the Oxygen ion is the smallest, the radius of the O²⁻ is also the smallest

Learn more  

electron affinity  

brainly.com/question/1440853  

Identify the group number in the periodic table  

brainly.com/question/2014634  

the charge on each ion in the compounds  

brainly.com/question/5880856

Keywords: element, group 6A, the smallest radius

Is a Daisy a prokaryote or a eukaryote

Answers

A daisy is a eukaryote. Because since the plant is a kingdom under the domain "Eukarya".
~Hope this helped! :)
A eukaryote. Eukaryote comes from Greek and means "real kernel"— eukaryotes have nuclei in their cells. Most complex organisms and basically all living things that you'll see with the naked eye are eukaryotes.