What is the difference between group and period

The electrons in the outer shell tend to be far from the nucleus and so the pool decreases. Periods are horizontal rows while the groups are the vertical columns on the periodic table.

There are 7 periods and 18 groups. Period 6 and 7 have 32 elements because of the addition of the actinides and lanthanides. Elements in a group share similar chemical or physical properties. They have the same number of valence electrons. On the other hand, elements in the same period share the same electron configuration. Electronegative decreases as you go down the group and increases as you go up due to an increased pull in the nucleus as a result of fewer energy levels.

Electronegativity increases as you go from left to right across the period with the addition of more protons as atomic numbers increase. Difference Between Periods and Groups. Difference Between Similar Terms and Objects. MLA 8 Madisha, Lusi. Name required. Email required. Please note: comment moderation is enabled and may delay your comment.

There is no need to resubmit your comment. Notify me of followup comments via e-mail. Written by : Lusi Madisha. The Rosen Publishing Group.

Distinguish Between. Distinguish between: Group - Period. Solution Show Solution Group Period 1. The vertical columns of elements in the modern periodic table are called groups. The horizontal rows of elements in the modern periodic table are called periods. There are 18 groups. There are 7 periods. Within this classification system, hydrogen is a nonmetal. The nonmetals, halogens, and noble gases are all types of nonmetallic elements.

The metalloids have intermediate properties. All of the other elements are metallic. Elements in a period share the highest unexcited electron energy level. There are more elements in some periods than others because the number of elements is determined by the number of electrons allowed in each energy sub-level. There are seven periods for naturally occurring elements :. Actively scan device characteristics for identification.

Use precise geolocation data. Select personalised content. Create a personalised content profile. Measure ad performance. Select basic ads. Elements in the related group have similar traits because they have the same electron counts in their outermost shell. The size of the element increases as you move downwards any group. This is because there are large numbers of protons and neutrons existing in the nucleus.

On top of this, an extra electron shell is which makes the atom heavier. For groups, there are two different ways to illustrate the elements. Having a understanding of both the numbering system is important because the periodic table appears in both the formats. However, both the numbering systems are acceptable. Groups and Periods are the two ways to categorize the chemically organic or inorganic elements or metals present in the modern periodic table and the key difference between group and period is its location in the periodic table.

As you now know, periods are on the horizontal line and groups are on the vertical line.