The Periodic Table
Gbogbo ọrọ náà
Over a hundred elements have been discovered, and the Periodic Table organises every one of them in a pattern that reveals their properties at a glance. Knowing where an element sits in the table tells you whether it is a metal or a non-metal, how many outer-shell electrons it has, and how it is likely to react.
In this lesson you will learn how elements are arranged by atomic number into groups and periods, how to use the table to distinguish metals from non-metals, and why elements in the same group share similar chemical properties.
Ebumnobi
- Understand how elements are arranged in the Periodic Table in order of atomic number, in groups and periods
- Identify an element as a metal or a non-metal according to its position in the Periodic Table
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Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na The Periodic Table. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
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Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- Elements in the Periodic Table are arranged in order of: A) Atomic mass B) Atomic number C) Number of neutrons D) Electron shells Answer: B
- Elements in the same group have similar properties because they have the same: A) Number of protons B) Number of electron shells C) Number of outer-shell electrons D) Atomic mass Answer: C
- Which of the following is a property of metals? A) Poor conductors of electricity B) Brittle as solids C) Form positive ions D) Have acidic oxides Answer: C
- The noble gases are unreactive because: A) They are very light B) They have full outer electron shells C) They have no protons D) They are always gases Answer: B
- An element in Group 7 and Period 2 would be: A) Lithium B) Carbon C) Fluorine D) Neon Answer: C
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The Periodic Table
State the periodic law and explain the organization of elements in the periodic table
"Chemistry: The Periodic Table" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/chemistry/pages/2-5-the-periodic-table. Access for free at https://openstax.org/books/chemistry/pages/1-introduction
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Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara The Periodic Table? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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