Examples of period in a sentence. 1  We have had two power failures in a five-month period. 2  The period between Christmas and New Year's Eve is a very busy one for us. 3  We are studying our country's colonial period.  Children go through many changes during the period of adolescence.
https://www.merriam-webster.com/dictionary/period
Science and mathematics. 1  Unit of time. 2  Period (physics), the duration of time of one cycle in a repeating event. 3  Orbital period, the time needed for one object to complete an orbit around another.  Period (periodic table), a horizontal row of the periodic 1  table. Period (gene), a gene in Drosophila involved in regulating circadian rhythm.
https://en.wikipedia.org/wiki/Period_(number)
Period Numbers. The period number is an identifier used to describe the row of the standard periodic table in which the element appears. The lanthanoids and actinoids are extensions of Periods 6 and 7 respectively, hence their assignment to those Periods.
http://www.yourperiodictable.com/group.php
In math terms, the period of a function is the smallest interval over which the values of the function recur. For example, the sine function, sin(x), has a period of 2pi, as sin(x + 2pi) = sin(x) for all values of x. Keep Learning.
https://www.reference.com/math/period-math-terms-c45be98027a01e52
In math terms, the period of a function is the smallest interval over which the values of the function recur. For example, the sine function, sin(x), has a period of 2pi, as sin(x + 2pi) = sin(x) for all values of x. Continue Reading.
https://www.reference.com/math/period-math-terms-c45be98027a01e52
Science and mathematics. Unit of time. Period (physics), the duration of time of one cycle in a repeating event. Orbital period, the time needed for one object to complete an orbit around another. Period (periodic table), a horizontal row of the periodic table.
https://en.wikipedia.org/wiki/Period_(number)
The group number is an identifier used to describe the column of the standard periodic table in which the element appears. Groups 1-2 (except hydrogen) and 13-18 are termed main group elements. Groups 3-11 are termed transition elements.
http://www.yourperiodictable.com/group.php
Definition of period for English Language Learners. : 1  a length of time during which a series of events or an action takes place or is completed. : 2  a length of time that is very important in the history of the world, a nation, etc. : 3  a time that is very important in the life of a person.
https://www.merriam-webster.com/dictionary/period
Best Answer: The period number is a just a fancy name of saying which horizontal row an element appears in on the periodic table. The first row, hydrogen and helium, appears at the top of the periodic table. Altogether, there are 7 rows (horizontally on the table). The atomic number is how many protons ab atom/ion of that element has.
https://sg.answers.yahoo.com/question/index?qid=20110720131505AAq6zNQ
Definition of period for English Language Learners. : a length of time during which a series of events or an action takes place or is completed. : a length of time that is very important in the history of the world, a nation, etc.
https://www.merriam-webster.com/dictionary/period
what is the period number
The period number is an identifier used to describe the row of the standard periodic table in which the element appears.