We can not answer your question because you have not made it clear what chapter 18 is part of. Please take the time to make sure your questions are complete and answerable, don't just copy them off your exercise book.
The Group 18 elements are called the noble gases or sometimes inert gases. Wikipedia has information on the noble gases, and a link is provided.
The elements that make up Group 18 on the Periodic Table are caleed noble (or inert) gases.
There are 18 groups and 7 periods in the modern periodic table.
p-block elements are the elements in which the last electron entres np orbital.which include six groups of elements i.e. group 13 to 18.boron family,carbon family,pnicogens,chalcogens,halogens and noble gases. Thank you
18 element
chapter 18
In chapter 18 of "Touching Spirit Bear," Cole begins building a dugout shelter to protect himself from the elements. He uses logs and rocks to construct the shelter and learns to appreciate the process of hard work and resourcefulness.
Volume 18 starts with chapter 102. (The last chapter in the volume is 107.)
The 18th chapter is "The Hunt"
She testifies in Chapter 18.
You can read Gakuen Alice chapter 18 on www.mangafox.com.ll
In chapter 18 the pengiuns go to Paris and eat food.
summary of chapter 18 in rizal's life and works
Chapter 18: There are no words for this
end of chapter 18 and beginning of chapter 19
at chapter 18 or 19
The book of Ecclesiastes has 222 verses. Chapter 1 - 18 Chapter 2 - 26 Chapter 3 - 22 Chapter 4 - 16 Chapter 5 - 20 Chapter 6 - 12 Chapter 7 - 29 Chapter 8 - 17 Chapter 9 - 18 Chapter 10 - 20 Chapter 11 - 10 Chapter 12 - 14