The reason for the number of elements in the successive periods of the periodic table to be increased in progression 2, 8, 18, 32 needs to be explained. Concept introduction: An atom consists of three sub-atomic particles; electrons, protons and neutrons. The Bohr’s model purposed the concept of energy levels around the nucleus. It was first most accepted atomic model. The quantum mechanical model is based on certain concepts like quantum numbers, Heisenberg uncertainty principle, etc. Quantum numbers are used to indicate the position and energy of an electron in an atom in a certain energy level. Electrons in an atom in certain energy levels called orbitals. The position, energy and spin of electrons are explained with the help of four quantum numbers.
The reason for the number of elements in the successive periods of the periodic table to be increased in progression 2, 8, 18, 32 needs to be explained. Concept introduction: An atom consists of three sub-atomic particles; electrons, protons and neutrons. The Bohr’s model purposed the concept of energy levels around the nucleus. It was first most accepted atomic model. The quantum mechanical model is based on certain concepts like quantum numbers, Heisenberg uncertainty principle, etc. Quantum numbers are used to indicate the position and energy of an electron in an atom in a certain energy level. Electrons in an atom in certain energy levels called orbitals. The position, energy and spin of electrons are explained with the help of four quantum numbers.
Solution Summary: The author explains how the number of elements in the periodic table increases in progression 2, 8, 18, 32. The quantum mechanical model is based on quantum numbers, Heisenberg uncertainty principle, etc.
The reason for the number of elements in the successive periods of the periodic table to be increased in progression 2, 8, 18, 32 needs to be explained.
Concept introduction:
An atom consists of three sub-atomic particles; electrons, protons and neutrons. The Bohr’s model purposed the concept of energy levels around the nucleus. It was first most accepted atomic model. The quantum mechanical model is based on certain concepts like quantum numbers, Heisenberg uncertainty principle, etc.
Quantum numbers are used to indicate the position and energy of an electron in an atom in a certain energy level. Electrons in an atom in certain energy levels called orbitals. The position, energy and spin of electrons are explained with the help of four quantum numbers.
MODULE 6
A STUDENT ACTIVITY
MAKING AN IMAGINARY PERIODIC CHART
INTRODUCTION
The following 26 elements were discovered in another far-away galaxy. They
are symbolically represented by the letters of our alphabet and are listed in
the order of their discovery. The intrepid explorers were able to determine
the atomic masses of the elements and to group them partially into families
of elements.
PURPOSE
• To design your own periodic chart.
DATA OBTAINED
BY THE EXPLORERS
The Atomic Masses of the Elements in the Far-Away Galaxy
A=45, B=47, C= 59, D=1, E=3, F= 13, G= 25, H= 15, I= 5, J= 7,
K= 17, L= 49, M= 39, N= 21, O= 19, P= 9, Q= 11, R= 29, S= 50,
T= 62, U= 63, V=53, W= 43, X= 33, Y=23, Z= 35
The Groups/Families of the Elements
Active Gases: GTDL
Liquids: S M E U H
Metallic Solids: I K V
I.
I.
III.
IV.
Transition Solids: JOR W
Nonmetallic Solids: X P
Noble Gases: Q ZCY B
V.
VI.
Not yet classified into groups: F AN
PROCEDURE
1. Using data obtained by the explorers, try to arrange the…
Four main-group elements a, b, c and d are highlighted in the outline of the Periodic Table below:
List these elements below in order of decreasing atomic radius. For example, if an atom of a is the biggest, and b the next biggest, then your list should start
b, ...
a
d
X
a
с
Important: don't try to figure out exactly which elements are marked, and then use your knowledge of the properties of each specific element. You don't need
to. You will also be marked wrong for any answer, correct or not, that can't be determined from only the rough location of each marked element in the Periodic
Table.
0.000
b
S
Kuiper Bek
Mércury
Jupiter
Venus
+ Uranus
Mars
Saturn
Earth
Ceres
Neptune
Jupiter
Pluto
inner solar system
outer solar system
not to scale
Based on the model, why are Ceres and Pluto classified as dwarf planets rather than planets?
O Ceres and Pluto are both round.
O Dwarf planets have irregularly shaped orbits, and planets have elliptical orbits.
O Neither Ceres nor Pluto has cleared its orbit of other objects.
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Quantum Numbers, Atomic Orbitals, and Electron Configurations; Author: Professor Dave Explains;https://www.youtube.com/watch?v=Aoi4j8es4gQ;License: Standard YouTube License, CC-BY