Please enable JavaScript.
Coggle requires JavaScript to display documents.
Chapter 4: 59 - 66 - Coggle Diagram
Chapter 4: 59 - 66
Isotopes
Atoms of same element have same no. of protons, but it may be possible that they have different no. of neutrons
Although the neutrons might differ, chemical properties are the same
-
Properties
-
Isotopes have different physical properties like Density, boiling point, etc
Radioisotopes
This is a difference in its physical properties, which occurs because the atom is radioactive
Extra neutron in their nuclei cause them to be unstable so the nuclei breaks up spontaneously, emitting certain types of radiation
Its Uses
-
-
-
-
Radioisotopes are used in industries to detect leakage in unground oil, water and gas pipes
-
Atomic Structure
-
-
-
Main features
except Hydrogen, all atoms of elements are made up of 3 sub-atomic particles
nucleus is at centre of the atom, which accounts for the major mass
-
Electrons are outside nucleus, in their shells, and have negligible mass
-
-
Octet Rule
-
-
Helium follows duplet rule, though it is stable, keeping in mind the 2n^2 rule
-
-
-
Why do atoms combine?
Except the inert gases, other all atoms of elements combine because they have an incomplete outermost shell giving it an unstable configuration
-
-
Bohr-Bury Scheme
-
Rules
-
-
-
Except, hydrogen and helium, who can only acquire two electrons, other all atoms can accommodate 8 electrons in the outermost shell