Answer:
Neon, atomic number 10, is stable.
Explanation:
Valencia electrons are the electrons found in the last electronic layer (called valence orbitals). These electrons are what determine the ability of the atom to form bonds. When an element joins another, it does so through its valence electrons.
The noble gases include the elements of group 18 of the periodic table. The noble gases are characterized by their very low chemical reactivity because they are very stable. This is because they have the full valence layer (complying with the octet rule, that is, they have 8 electrons at their last energy level, with the exception of helium that has 2 electrons), causing them to have a low tendency to capture or release electrons . That is why they are also called inert gases.
The Neon, whose atomic number is 10, belongs to the group of noble gases. So this element is stable.
Jack should look for __________ evidence because the analysis of such evidence can prove whether the person was present when the crime
was being committed. This evidence refers to tiny fragments of material that can be transferred from a human to a human or human to a
location
(forensic science question)
Answer: TRACE evidence
Explanation: Any evidence that can be transferred from one person to another or one person to a place is trace evidence. Also I took the test.
The particle that has the least mass is a beta particle.
If we look at the particles listed individually, we can see that the proton and the neutron are both massive particles found in the nucleus of an atom. They are responsible for the mass of the atom. An alpha particle is just of the same mass as a helium nucleus.
A beta particle is actually an electron. Recall that an electron has negligible mass.The mass of an electron is about 1/840 times that of the proton.
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The least massive particle among alpha particles, neutrons, beta particles, and protons is the beta particle (also known as an electron). Its mass is so small that it would take about 1800 electrons to equal the mass of a single proton or neutron.
The masses of the different particles are as follows - protons and neutrons are heavier particles with a mass of 1.0073 and 1.0087 amu respectively, while an alpha particle, which is a high-energy helium nucleus, has a mass number of 4 (which makes it heavier than a proton and neutron). Compared to these particles, the beta particle is a high-energy electron and has a much lighter mass.
Specifically, the beta particle, or electron, is the least massive among the list, with a light particle mass of about 0.00055 amu. This means that it would take about 1800 electrons to equal the mass of a single proton or neutron. So, to answer your question, when comparing an alpha particle, neutron, beta particle (electron), and a proton, the beta particle (electron) is the particle with the least mass among them.
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(2) The proportion by mass of elements combined in potassium chlorate varies.
(3) Potassium chlorate is composed of four elements.
(4) Potassium chlorate is composed of five elements.
Answer : The correct option is, (1) The proportion by mass of elements combined in potassium chlorate is fixed.
Explanation :
The composition of any compound is studied on the basis of law of fixed proportion. This law stats that in a compound the elements are present in fixed proportion by their mass.
In the given options, the option (1) statement describes the composition of potassium chlorate.
While the other options (2), (3) and (4) statements does not describe the composition of potassium chlorate.
Hence, the correct option is (1).
Answer:
Corona
Explanation:
The outermost layer of the sun's atmosphere is called the corona, meaning “crown.” The corona is formed of thin wisps of gas that extend outward into space for millions of miles. It is much less bright than the photosphere, so we can only see it if the rest of the sun is blotted out, for example during a solar eclipse.