The element for which the group number and the period number are the same is helium, with an atomic number of 2. According to the periodic table of elements, helium is a noble gas that has the symbol He and atomic weight of 4.
002602. It occurs naturally as a colorless, odorless, and tasteless gas and is the second most abundant element in the universe by mass after hydrogen. Helium has two electrons in its outer shell and therefore belongs to group 18 and period 1 of the periodic table.
Additionally, it is the lightest and least reactive of the noble gases, making it useful in a variety of applications.
Which element are in same period and same group?
Elements that are in the same period and same group are in the same family and have similar chemical properties. For example, elements in Group 1 (alkali metals) on the periodic table, such as lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr) are all in the same period and group and share similar properties, such as being soft, silvery-white metals that react vigorously with water and oxygen.
Similarly, elements in Group 17 (halogens) – fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At) – all share similar properties, such as being non-metals that form salts when they combine with metals.
Which of the group of element belongs to the same period?
The elements that belong to the same period are those that have the same number of electron shells and the same number of electron orbitals. These elements are identified by their atomic numbers. For instance, elements such as lithium (atomic number 3), sodium (atomic number 11), potassium (atomic number 19), and rubidium (atomic number 37) all belong to the same period because they comprise the first four elements in the Periodic Table and have three electron shells.
Each element has 1, 2, and 8 electrons in the first, second, and third shells, respectively.
What is same in period of periodic table?
The period of the periodic table is the horizontal row of elements. All elements within the same period have the same number of energy levels or shells of electrons surrounding the nucleus. This is particularly important because it determines the number of electrons that can occupy the last energy level.
This, in turn, dictates the physical and chemical behavior of the element. Specifically, the number of electrons that can occupy the outermost energy shell determines the type of bonds an element can form and how many electrons it can give, take, or share with another atom.
Further, the number of electrons in the outermost energy level dictates the type of charge the atom has and the number of chemical bonds it can form with other atoms. Therefore, elements in the same period of the periodic table exhibit similar physical and chemical properties such as reactivity, electronegativity, and atomic radius.
What do elements in the same group of the periodic table have in common?
Elements in the same group of the periodic table, also known as columns, share several characteristics. These include similar chemical properties, such as their oxidation states, reactivity, and in some instances, structure.
All elements in the same group of the periodic table have the same number of electrons in their outer shells, which allows them to form similar bonds and exhibit similar chemical properties. Furthermore, all elements in the same group usually have the same number of protons, which subtly explains why they are all chemically similar.
Elements in the same group of the periodic table also typically have the same types of electron configuration, meaning they typically have the same number of valence electrons. This also explains their similar reactivity and behaviour.
Finally, some elements in the same group can have similar structures and bond angles, which can be used to explain their strong chemical similarities.
Is group and period the same?
No, group and period are not the same. Group refers to a vertical column in the periodic table and indicates the number of valence electrons in an atom. Period refers to the horizontal rows in the periodic table and it indicates the atomic number of an element.
The atomic number of an element is the number of protons present in its nucleus. Elements in the same group usually have similar chemical and physical properties. Elements in the same period usually have different chemical and physical properties.
Are groups or periods more similar?
Groups and periods share some similarities, but in general, groups have more similarities among each other than periods. Groups are a larger organizing principle than periods, as they contain multiple different elements within them, while periods are generally one distinct entity.
Groups typically contain multiple elements, such as elements with the same physical and chemical properties, while periods only include elements that are similar in terms of atomic structure and electron configuration.
Additionally, groups contain multiple types of elements, such as metals, nonmetals, halogens, and noble gases, while periods are generally divided up into categories based on reactivity. Finally, elements in a group tend to closely resemble each other in terms of the number of valence electrons they possess, although there can be variation, while elements in the same period will all have the same number of valence electrons.
Therefore, groups are more similar in nature than periods.
How many groups are in a period?
A period is part of the Periodic Table of Elements which is used to arrange the elements according to their properties. The Periodic Table is organized into periods which are each composed of groups.
There are seven periods in the periodic table, each containing anywhere from one to eighteen groups. The number of elements in each group depends on the period which it is grouped in. For example, in period one, group 1 has 2 elements while group 2 has 8 elements.
In period two, group 3 has 10 elements while group 4 has 18 elements. Period three and beyond each have 18 groups containing various elements.
What is the difference between a period and a group family?
The difference between a period and a group family is that a period is a unit of geological time that typically ranges from several million to tens of millions of years. A group family, on the other hand, is a group of people—such as parents, children, grandparents, aunts, uncles, and other relatives—who have frequent contact with each other and typically have a shared set of values and accept common responsibilities for each other.
How do you remember periods or groups?
It can be helpful to try to remember periods or groups by breaking them down into smaller, manageable components. For example, it may be helpful to think about the different aspects of each period or group, such as their key characteristics, important events and important people.
Then, draw connections between those components to help you remember the overall picture. Additionally, techniques like mnemonics and keyword techniques can be useful for committing information to memory and helping you to recall facts more easily.
Additionally, visual cues can be helpful in helping to remember periods or groups – try to draw a sketch of key features or personas associated with each period or group to help solidify the information in your mind.
Lastly, practice makes perfect. Try to review these facts regularly to cement them in your memory and make them easier to recall.
How do you identify groups and periods?
In chemistry, the terms “groups” and “periods” refer to the arrangement of elements in the periodic table. Groups are the columns of elements, typically arranged vertically, and periods are the rows of elements, usually arranged horizontally.
Each element is identified by its atomic number, which is indicated by its position in the periodic table.
In addition, groups and periods can be identified by looking at the elements’ chemical properties. Each group contains elements with similar chemical properties and behavior, whereas the elements within a period demonstrate similar trends in properties, such as electronegativity and ionization energy.
This allows scientists to make predictions about the elements’ reactivity and potential uses.
For example, elements in the Group 1A column, the alkali metals, have low ionization energies and therefore react easily with other elements. Period 4 elements have high ionization energies, making them less reactive.
By taking into consideration both the arrangement of the elements in the periodic table and their chemical properties, scientists can easily identify and distinguish between groups and periods.