The first element in the fourth period of the Periodic Table is potassium (K).
Chat with our AI personalities
It is a period 3 element.
Argon is a period 3 element.
Period, 3 (row)Group, 18 (column)
In the context of a day-night cycle, a night typically refers to the period of darkness between sunset and sunrise. Therefore, the fourth night would encompass the fourth period of darkness following the previous three nights. If each night is considered to be a full 24-hour day cycle, then the fourth night would consist of the nighttime hours of the fourth day and the subsequent daytime hours of the fifth day.
It is one fourth.