What is the difference between an atom in the ground state and an atom in an excited state? A. The atom in the ground state has less energy and is less stable than the atom in an excited state. B. The atom in an excited state has one fewer electron than the atom in the ground state. C. The atom in an excited state has more energy and is less stable than the atom in the ground state. D. The atom in an excited state has one more electron than the atom in the ground state.
Answers
The correct option is C.
An atom can be either in the ground state or in an excited state. An atom is said to be in the ground state, if the total energy of its electron can not be lowered by moving one or more electrons into different orbitals. At the ground state, the electrons in the atom have the lowest energy possible and they are stable. On the other hand, an atom is said to be in an excited state, if the energy of its electrons can be lowered by transferring one or more electrons into different orbitals. An atom in an excited state has more energy and is less stable.
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Answer:
Bohr thought that electrons orbited the nucleus in quantised orbits. ... In Rutherford's model most of the atom's mass is concentrated into the centre (what we now call the nucleus) and electrons surround the positive mass in something like a cloud. Bohr's most significant contribution was the quantisation of the model.
Explanation:
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Each carbon atom covalently bonds with atoms of carbon, hydrogen, oxygen, and nitrogen.
Each carbon atom ionically bonds with atoms of oxygen and nitrogen.
Each carbon atom covalently bonds with atoms of oxygen and nitrogen.
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Each carbon atom covalently bonds with toms of carbon, hydrogen oxygen, and nitrogen
A carbon atom can have 4 single valence electrons around it. This allows it to form covalent bonds with many different atoms.
Each carbon atom covalently bonds with atoms of carbon, hydrogen, oxygen, and nitrogen describes why carbon can form a wide variety of organic compounds. thus, option B is correct.
What is valency?
Valency is the combining power of an element. Elements in the same group of the periodic table have the same valency. The valency of an element is related to how many electrons are in the outer shell.
Carbon can form a wide variety of organic compounds because Each carbon atom covalently bonds with atoms of carbon, hydrogen oxygen, and nitrogen. a carbon atom can have 4 single valence electrons around it. This allows it to form covalent bonds with many different atoms.
Learn more about the valency of carbon here:
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Answer:
The colors are produced by heating metal salts, such as calcium chloride or sodium nitrate, that emit characteristic colors. List of colors and elements in Fireworks: Aluminum – Aluminum is used to produce silver and white flames and sparks.
Final answer:
Colors in fireworks are produced by heating certain chemicals until they emit light, creating an emission spectrum. Different chemicals create different colors; for example, sodium compunds create yellow, while lithium creates crimson.
Explanation:
Chemicals are used to produce colors in fireworks by being heated until they are excited and emit light. This produces an emission spectrum which varies based on the element being heated. Sodium and its compounds, for example, produce a bright yellow color. This effect is seen when an electrical discharge is passed through sodium vapor. Lithium, on the other hand, creates a bright, crimson color.
Other alkali metals and their salts also add color to a flame. Even certain alkaline earth metals such as calcium, strontium, and barium give color to a flame giving shades of red and green. In certain specific engines, green and yellow flames are produced using different types of fuel and oxidant mixtures.
Thus, the specific chemicals used and how they're mixed and ignited play a critical role in the color of the resulting fireworks display.
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A bright-line spectrum is produced when the atoms in a sample of an element .
Further explanation:
Atomic electronic transition:
When an atom jumps from one energy level to another energy level, an atomic electronic transition is said to take place. This occurs either due to the absorption or emission of energy by the electron.
When the transition of an atom takes place from lower to higher energy levels by the absorption of energy, it is known as an absorption process. But when atom jumps from higher to lower energy level, it releases or emits energy and therefore the process is called an emission process.
The lowest energy state of an atom is called the ground state and its energy is known as zero-point energy. It is the most stable energy level of an atom. But the state that has energy higher than that of the ground state is called an excited state. Excited states are unstable as compared to the ground state and atoms in such states tend to lose energy and jump back to the lower energy levels.
Since the atom of the sample bright-line present in the excited states, a bright-line spectrum is observed only if it emits some amount of energy and comes back to the lower energy level.
Learn more:
- Component of John Dalton’s atomic theory: brainly.com/question/2357175
- Basis of investigation for the scientists: brainly.com/question/158048
Answer details:
Grade: Senior School
Chapter: Atomic structure
Subject: Chemistry
Keywords: transition, ground state, excited state, energy, absorption, emission.