Answer: non metal
Explanation:
Nonmetals are dull, possess high ionization energies and electronegatives and are typically poor electricity conductors as they're insulators.
Non metals are also brittle and possess low melting point. Therefore, with the explanation, the sample is most likely a non metal.
The sample described is most likely a sulfur solid.
The sample described in the question, which is pale yellow, brittle, and has no shine, is most likely a sulfur solid. Sulfur is a chemical element that is commonly found in its solid form and has a pale yellow color. It is brittle, meaning that it shatters easily upon impact, and it does not have the characteristic shine that metals have.
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By definition, the correct answer is option D. Scientists can identify an element by looking at the structure of a single atom because the number of protons can be determined, and thus its identity.
All atoms are composed of a central nucleus in which there are particles with a positive electric charge, the protons, and neutron, which is an electrically neutral subatomic particle, around which other particles with a negative electric charge that are electrons move.
Thus, the atom is electrically neutral, since the positive charge of the protons is compensated by the negative charge of the electrons.
Atoms of different elements have different amounts of protons. The atomic number (which is identified by the letter Z) indicates the amount of protons that is present in the nucleus of an atom.
This number is then responsible for defining the electronic configuration of the atom and the chemical properties of the element. Then it is possible to say that the number of protons in the nucleus, that is to say the atomic number Z, of an atom determines its identity.
Finally, the correct answer is option D. Scientists can identify an element by looking at the structure of a single atom because the number of protons can be determined, and thus its identity.
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Answer:
1. balanced
2.unbalanced
3.unbalabced
4.balanced
The strength of intermolecular forces of attraction varies depending on the type of molecules involved. In general, the order of increasing strength of intermolecular forces is as follows:
1. **London Dispersion Forces (Van der Waals Forces):** These are the weakest intermolecular forces and occur in all molecules. They are caused by temporary fluctuations in electron distribution, leading to temporary partial charges. London dispersion forces are stronger in larger and more polarizable molecules.
2. **Dipole-Dipole Forces:** These forces occur between polar molecules with permanent dipoles. They are stronger than London dispersion forces and result from the attraction between the positive end of one molecule and the negative end of another.
3. **Hydrogen Bonding:** This is the strongest type of intermolecular force. It occurs when hydrogen is bonded to a highly electronegative atom (such as nitrogen, oxygen, or fluorine) and is attracted to another electronegative atom in a different molecule. Hydrogen bonds are responsible for the unique properties of substances like water and ammonia.
So, hydrogen bonding generally represents the strongest intermolecular force of attraction among these three types. However, it's important to note that the actual strength of these forces can also depend on factors such as molecular size, shape, and temperature.
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Answer: c. More than one population of a given species.
Explanation:
A habitat is a place or location which provide shelter and other necessary resources desired for survival.
Among the options given more than one population of a given species is correct option. This is because of the fact that if more than one population of species exists there will be competition for resources among the members this will lead to the decline in number of individuals in the populations.
2 to 5 nm
5 × 10−21 m to 2 × 10−20 m
2 to 5 cm
The atomic radii is approximately between 5 × 10−11 m to 2 × 10−10 m
The position where the moon is located where its shadow may sometimes reach Earth is position A .
We know that in the outer space there are a lot of celestial bodies that can be found. Now we know that a celestial body is one that can be found in the outer space and the moon and the sun are all parts of the celestial bodies that we can find in the solar system.
In this case we are being asked for the position of the moon that could lead to an eclipse where the moon would come between the earth and the sun and that is the position A.
Learn more about eclipse:brainly.com/question/4279342
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The position of the Moon’s shadow reaching Earth is not dependent on Earth’s position in its orbit around the Sun but on the relative positions of the Moon, Earth, and Sun. If the Moon is located directly between the Earth and the Sun, the Moon's shadow can sometimes reach Earth.
The position of Earth with respect to the Moon is not necessarily related to its position in its orbit around the Sun, but with the positioning and phases of the Moon relative to the Sun and Earth. When the Moon is positioned between the Earth and the Sun, we typically have a New Moon phase. During this positioning, if everything aligns perfectly, it is possible for the Moon's shadow to reach Earth, causing an eclipse. This can occur at any position of Earth's orbit around the Sun, provided the Moon is located appropriately.
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