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Answer:
<u><em>The aufbau principle</em></u>
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<u><em>The Pauli exclusion principle</em></u>
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<u><em>Hund's rule of maximum multiplicity</em></u>
Explanation:
<u><em>The aufbau principle:</em></u>
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The fundamental electronic configuration is achieved by placing the electrons one by one in the different orbitals available for the atom, which are arranged in increasing order of energy.
<u><em>The Pauli exclusion principle:</em></u>
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Two electrons of the same atom cannot have their four equal quantum numbers. Because each orbital is defined by the quantum numbers n, l, and m, there are only two possibilities ms = -1/2 and ms = +1/2, which physically reflects that each orbital can contain a maximum of two electrons, having opposite spins
<u><em>Hund's rule of maximum multiplicity:</em></u>
This rule says that when there are several electrons occupying degenerate orbitals, of equal energy, they will do so in different orbitals and with parallel spins, whenever this is possible. Because electrons repel each other, the minimum energy configuration is one that has electrons as far away as possible from each other, and that is why they are distributed separately before two electrons occupy the same orbital.
Answer:
1/6 del peso en la tierra.
Answer:
The train travelled 10hours.
Explanation:
Using speed= distance/time ...eq1
Let the time taken by train to cover the journey be t.
Let the speed of train be s
Time= distance/speed ...eq2
Time t =600/s ...eq3
The train is delayed for 1 1/2 hours=3/2 hours
Train increased by 15km/hr.
Train travelled 1/4 of 600k.= 150km.
Speed increased by s + 15 to cover the remaining 450km
t = 150/s + 400/(s + 15) + 3/2 ..eq4
Equating eq3 and 4
600/s= 150/s + 460/(s + 15) + 3/2
450/s = 3/2 + 450/(s + 15)
3s^2 + 45s -13500=0
Solving the quadratic equation
S= -45 +-sqrt(45^2-4(3×13500)/2×3
S= 60 , -75
Hence speed of train is 60km/hr
Using eq 2 distance/speed=time
600/60=10
t= 10hours
Answer:
As ice melts into water, kinetic energy is being added to the particles. This causes them to be 'excited' and they break the bonds that hold them together as a solid, resulting in a change of state: solid -> liquid.
Explanation:
