What is the difference between a period and a group in the periodic table

Groups and periods are just ways to divide and categorise elements in the periodic table according to their properties- be it physical or chemical. A period is the horizontal line and all the elements in one period have the same number of energy levels. A group is the vertical line and all the elements in a group have the same number of electrons in the outer most energy level- hence why they have similar chemical properties as the electrons on the outer shell dictate reactability.

ZK
Answered by Zoya K. Chemistry tutor

20180 Views

See similar Chemistry GCSE tutors

Related Chemistry GCSE answers

All answers ▸

Describe how elements are arranged in the periodic table


How do you increase the rate of a reaction?


A student wishes to investigate the effect of surface area on the rate of reaction between marble chips and hydrochloric acid. Which variables should he control?


Potassium forms an ionic compound with sulfur. Describe what happens when two atoms of potassium react with one atom of sulfur. Give your answer in terms of electron transfer. Give the formulae of the ions formed. (5 marks)


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences