Atomic orbit, angular distribution of atomic orbit, angular distribution of electron cloud 1. Why is it that for p-type atomic orbitals, the two spheres form an 8-shaped distribution in the atomic angle distribution diagram and dumbbell shaped in the electron cloud angle distribution diagram, 2. What's the shape of the p-type orbital?

Atomic orbit, angular distribution of atomic orbit, angular distribution of electron cloud 1. Why is it that for p-type atomic orbitals, the two spheres form an 8-shaped distribution in the atomic angle distribution diagram and dumbbell shaped in the electron cloud angle distribution diagram, 2. What's the shape of the p-type orbital?

P-type atomic orbitals are dumbbell shaped. In fact, the distribution of atomic orbitals is based on the distribution of the radial and angular parts of the wave function. If I remember correctly

What does the sign of the atomic orbital map mean?

The wave function sign of atomic orbit is essentially a method to deal with the situation that can happen after the electron clouds of two atoms overlap. When the electron clouds with the same wave function sign overlap, the density of the electron cloud will increase. When the electron clouds with different wave functions overlap, the density of the electron cloud will decrease

On the addition and subtraction of integers
Given x + 2Y + 3Z = 10.4x + 3Y + 2Z = 5. Find the value of X + y + Z

∵x+2y+3z=10 4x+3y+2z=5
∴(x+2y+3z)+(4x+3y+2z)=10+5
5x+5y+5z=15
∵ find x + y + Z
∴x+y+z=15/5
x+y+z=3

It is known that the density of ice is 0.9 × 10 cubic kg / m3. If a 1 cubic meter piece of ice is put into water, if the pull force is 5000n, the ice will be damaged
Buoyancy and volume immersed in water? (g = 10N / kg)

The speed of the freight car is 7 / 8 of the speed of the bus. Now the two cars leave from a and B. as a result, they meet at the midpoint of 5km. What is the distance between a and B? Please write down the specific process,

Meet at 5km from the midpoint,
Therefore, buses travel 2 * 5 km more than trucks
The two cars meet at the same time
Speed market 7 / 8
So it's 7 / 8
So the bus takes 8 / (7 + 8) = 8 / 15
The truck goes 7 / (7 + 8) = 7 / 15
So the distance is 10 / (8 / 15-7 / 15) = 150 km

If M = (x-3) (X-5) and N = (X-2) (X-6), compare m with n

M-N=(x-3)(x-5)-(x-2)(x-6)
=x^2-8x+15-(x^2-8x+12)
=15-12
=3>0
M>N

3/5X=X/15
My classmates can't do it either
/Represents the fractional line

3/5x=x/15
5x²=45
x²=9
X = 3 or x = - 3

The height of a cylinder is 8 cm, and the surface area of the cylinder will be reduced by 25.12 square cm after cutting off a section of 2 cm
To do detailed steps

It can be seen from the meaning of the title:
The circumference of the bottom of the cylinder is = 25.12/2 = 12.56
The bottom radius is = 12.56/3.14/2 = 2
Surface area = (2 * 2 * 3.14) * 2 + 12.56 * 8
=25.12+100.48
=125.6

There are three numbers a, B and C. they are not equal to zero. Xiao Ming found that C × 7 / 7 = a × 5 / 9 = 13 / 12 × B. you can make these three numbers from small to large

That is, C = 9A / 5 = 12b / 13
So from small to large is b > C > a

Given f (x + 1) = X2, find f (x)
My answer is f (x) = x2-2x
If it's wrong, help me write down the correct one,

Let x + 1 = t, x = T-1
f(x+1)=f(t)=(t-1)^2
So, f (x) = (x-1) ^ 2