Which properties are characteristic of group 2 elements at stp
2 answers:
The properties of group 2 elements are listed as follows:
1. These have an outer electronic configuration of .
2. These are strong reducing agents.
3. These are shiny, silvery-white metals.
4. These form oxides, halides, and hydroxides when reacted with oxygen, halogens, and water respectively.
Further Explanation:
Periodic table:
A systematic arrangement of elements in various rows and columns is known as a periodic table. Here, elements are arranged in increasing order of their respective atomic numbers so that elements with the same chemical and physical properties lie in the same group. Horizontal rows are called periods and vertical columns are called groups. There are 18 groups and 7 periods in a periodic table.
Elements are further classified as metals, non-metals, and metalloids in the periodic table. The elements placed at the left side of the table are called metals and the elements placed at the right of the table are called non-metals. Metalloids are the elements kept between metals and non-metals.
STP (Standard Temperature and Pressure):
Under STP conditions, the temperature of the system is equal to either , 273.15 K or
and the value of pressure is either 1 atm, 101.3 kPa, 1.01325 bar or 760 mm Hg. The term STP was defined by the International Union of Pure and Applied Chemistry (IUPAC). It is used to determine the density as well as the volume of any gas. Under such conditions, the volume of all ideal gases comes out to be 22.4 L.
Alkaline earth metals are known as the elements of group 2 of the periodic table. Their general valence shell configuration is . This indicates the presence of two electrons in their outermost shells. Beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra) are the elements that belong to 2nd group of the periodic table.
Group 2 elements have the tendency to lose two electrons to other elements and form ionic compounds. These elements have +2 as their most stable oxidation states. These also act as strong reducing agents due to their ability to lose electrons easily.
Group 2 elements are present at the left side of the periodic table after alkali or group 1 elements. So their atomic radii are smaller than those of alkali metals but larger than the rest of the elements in the periodic table.
Due to their smaller atomic radii as compared to alkali metals, group 2 elements have higher ionization energies than alkali metals but lower than the remaining elements.
At STP, these elements are shiny, soft, silvery-white metals that have industrial as well as biological importance.
Group 2 elements react with oxygen to form metal oxides, halogens to form halides, water to form hydroxides.
Learn more:
1. Which ion was formed by providing the second ionization energy? brainly.com/question/1398705
2. Write a chemical equation representing the first ionization energy for lithium: brainly.com/question/5880605
Answer details:
Grade: High School
Subject: Chemistry
Chapter: Periodic classification of elements
Keywords: periodic table, systematic arrangement, elements, groups, periods, group 2 elements, STP, atomic radii, ionization energy, reducing agents, oxides, halides, hydroxides.
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