Final answer:
The tangential speed of the electron in the hydrogen atom cannot be determined without knowing the time or period of its revolution around the nucleus.
Step-by-step explanation:
In the simple ('planetary') model of the atom, the electron moves at a constant speed in a circular orbit around the nucleus. The tangential speed of the electron can be calculated using the formula:
tangential speed = (2 * π * radius) / time
In this case, the radius of the orbit is given as 0.053 nm. Since the time is not mentioned, we cannot calculate the exact tangential speed. However, we can find the average tangential speed by assuming the electron completes one revolution in one period. In that case, the time would be the period of the electron's revolution around the nucleus.
tangential speed = (2 * π * 0.053 nm) / period
The tangential speed will depend on the value of the period, which is related to the angular velocity of the electron. Without knowing the exact period or angular velocity, we cannot determine the tangential speed.
Learn more about Electron movement in the simple model of the atom