Dissociation constant and formation constant of complex (also called instability constant and stability constant).

In the standard state, Kf= 1/Kd.

Kd is a measure of the instability of coordination ions. For coordination ions with the same coordination number, the larger Kd means that the coordination ions are easier to dissociate.

Kf is a measure of the stability of coordination ions. The larger Kf is, the more stable the coordination ions are, and the relationship between them is reciprocal.

The Chinese name of KDJ indicator is stochastics, which originated from the futures market. Half a century has passed since it was founded by American master Dr. george ryan in 1950s, and KD in stochastics has proved to be an awe-inspiring classic.

Stochastics (KD) is suitable for technical analysis of short and medium-term stocks. Compared with the moving average, the random concept of KD line has its own advantages. Traditionally, the moving average is only calculated by the closing price, so it can't show the real fluctuation of a market.

In other words, the highest and lowest prices of the day or in recent days cannot be reflected in the moving average. Therefore, some experts have gradually created some more advanced technical theories and fully played the role of the moving average. The KD line is one of the representative works.

Reference to the above content: Baidu Encyclopedia-Formula