NCERT Solutions for Class 10 Science Chapter 5 Periodic Classification of Elements

NCERT solutions for Class 10 at iitianacademy provides detailed solutions to all the questions as per CBSE guidelines. The solutions are in sync with the questions provided in the NCERT textbook and have been solved by subject matter experts in accordance with the understanding level of Class 10 students. The textbook is carefully designed so as to allow students to have complete knowledge of the subject. The NCERT solutions furthermore ease the task of students for last-minute studies. The solutions provided are accurate and less complex. The main aim of providing students with NCERT solutions is to be beneficial enough to students, saving time that they spend browsing through different websites for solutions. It is an ultimate one-stop-shop for all the learning requirements and serves as an effective reference tool.

NCERT Solutions for Class 10 Science Chapter 5 – Summary:

• Elements are classified on the basis of similarities in their properties.
• Döbereiner grouped the elements into triads and Newlands gave the Law of Octaves.
• Mendeléev arranged the elements in increasing order of their atomic masses and according to their chemical properties.
• Mendeléev even predicted the existence of some yet to be discovered elements on the basis of gaps in his Periodic Table.
• Anomalies in arrangement of elements based on increasing atomic mass could be removed when the elements were arranged in order of increasing atomic number, a fundamental property of the element discovered by Moseley.
• Elements in the Modern Periodic Table are arranged in 18 vertical columns called groups and 7 horizontal rows called periods.
• Elements thus arranged show periodicity of properties including atomic size, valency or combining capacity and metallic and non-metallic character.