Answer:
The de-exitation of electron to its lower energy level cause the emission spectrum of an element.
Explanation:
The electron is jumped into higher level and back into lower level by absorbing and releasing the energy.
The process is called excitation and de-excitation.
Excitation:
When the energy is provided to the atom the electrons by absorbing the energy jump to the higher energy levels. This process is called excitation. The amount of energy absorbed by the electron is exactly equal to the energy difference of orbits. For example if electron jumped from K to L it must absorbed the energy which is equal the energy difference of these two level. The excited electron thus move back to lower energy level which is K by releasing the energy because electron can not stay longer in higher energy level and comes to ground state.
De-excitation:
When the excited electron fall back to the lower energy levels the energy is released in the form of radiations. This energy is exactly equal to the energy difference between the orbits. These radiations gives the emission spectrum of that element. The characteristics bright colors are due to the these emitted radiations. These emitted radiations can be seen if they are fall in the visible region of spectrum.
The atomic emission spectrum of an element is produced by the energy released when an electron transitions from a higher to a lower energy level. This energy is emitted as light, creating a unique spectrum that can be used to identify the element.
The atomic emission spectrum of an element is caused by the energy released when an electron in an atom moves from a higher energy level to a lower energy level. When an atom absorbs energy, it moves its orbiting electrons to a higher energy level. However, these electrons cannot maintain this high energy state for long, forcing them to transition back to their original or lower energy level. The energy they release during this transition is emitted in the form of light, creating a unique emission spectrum.
For example, hydrogen has a characteristic series of emission lines in its spectrum (Balmer series) because the electrons in a hydrogen atom can occupy specific energy levels. When these electrons drop from a higher energy level to a lower one, they emit light of specific wavelengths, creating the unique atomic emission spectrum of hydrogen.
#SPJ6
Answer: The correct answer is Option D.
Explanation:
Atomic radius is defined as the total distance from the nucleus to outermost orbital of the electron.
As moving from top to bottom, new shell is added around the nucleus. The outermost orbital gets far away from the nucleus and hence, the distance between the nucleus and outermost orbital gets increased.
Thus, the atomic radii of the elements increases as we move from top to bottom in a group.
Hence, the correct answer is Option D.
dalton said that the atom is the smallest particle but now we know that an atom can be divided into electron proton and neutron.
the guy below should be deleted but you cant cause its approved, he didnt even asnwer the question XD
Answer:
NO: A and B
YES: C and D
Explanation:
A. Atomic Number No. This is the number of protons in the nucleus.
B. Molecular Weight No. Protons + Neutrons
C. Chemical Reactivity Yes. The electron configuration allows prediction of reactivity with other elements.
D. Valence Electrons Yes. The most active electrons is bonding.
3 equations. 1: upper N upper O gas plus upper O subscript 3 gas right arrow upper N upper O subscript 2 gas plus upper O subscript 2 gas. Delta H subscript 1 equals 198.9 kilojoules. 2: StartFraction 3 over 2 EndFraction upper O gas right arrow upper O subscript 3 gas. Delta H subscript 2 equals 142.3 kilojoules. 3: upper O gas right arrow one half upper O subscript 2 gas. Delta H subscript 3 equals negative 247.5 kilojoules.
What is DeltaHrxn for the reaction shown below?
NO(g)+O(g)->NO2(g)
Answer:
-304.1
I had this question and that’s what I got
Answer:
-867.7
Explanation:
yeah
Answer:
C. All electron carriers are mobile and hydrophobic
Explanation:
Hello,
In this case, it is widely known that the electron carriers move inside the inner mitochondrial membrane and consequently move electrons from one to another. In such a way, they are mobile, therefore they are largely hydrophobic as long as they are inside the membrane.
For instance, the cytochrome c is a water-soluble protein in a large range, therefore, the answer is: C. All electron carriers are mobile and hydrophobic.
Best regards.