HomeTextbook Notes300,000CA170,000

Chemistry 2213A/B Chapter Notes - Chapter 1: Chemical Polarity, Covalent Bond, Ionic Bonding

78 views6 pages

23 Sep 2016

School

Western University

Department

Course

Chemistry 2213A/B

Professor

For unlimited access to Textbook Notes, a Class+ subscription is required.

Document Summary

Electrons cant move around an atom freely they are con ned to regions of space called principal energy levels or shells. Shells are divided into subshells labelled by letters s,p,d,f. In the subshells electrons are grouped in orbitals. Orbital: a region of space that can hold 2 electrons. Rst shell has one orbital, 1s orbital. Second shell has one 2s orbital and three 2p orbitals. Third shell has one 3s orbital, three 3p orbitals and ve 3d orbitals. P orbitals has 3 orbitals that can hold 2 electrons each, 6 electron in total for p. D orbitals has 5 orbitals that can hold 2 electrons each, 10 electron in total for d. D orbitals has 7 orbitals that can hold 2 electrons each, 14 electron in total for f. The relative energy of electrons increases as the shells and orbitals increase.

Related Documents

Chemistry 2213A/B Chapter 1: 1.1-1.7 COVALENT BONDING AND SHAPES OF MOLECULES

Chemistry 2213A/B

Chemistry 2213A/B Study Guide - Midterm Guide: Lewis Acids And Bases, Cycloalkane, Amine

Chemistry 2213A/B Chapter Notes - Chapter 1.1: Lewis Structure, Pauli Exclusion Principle, Principal Quantum Number

Related Questions

please answer questions 12- 18

Quantum mechanics is a very complex theory. A good way to help you remember it is to compare it to an apartment building. An apartment building has different floors, different apartments on each floor, and different rooms within each apartment. We can look upon the electrons of an atom as rather peculiar apartment dwellers. Electrons prefer the floor closest to the ground and the smallest apartments. Electrons also prefer to live one to a room until each room in an apartment has one occupant. The electrons will then pair up until each room has two. Each room in an apartment can hold two electrons Apartment buildings have several floors. The model we discuss has several floors, but only the first 7 floors will be occupied. All the electrons known today will fit within 7 floors of the building. Additional floors are available but will only be occupied in special situations. The floors in the apartment building are called shells in the electron model and are numbered 1-7. 1) According to what you have just read, what shell will be occupied first by electrons? 2 flers Each shell (or floor) in the model has one or more apartments, which are called subshells. These subshells are apartments of four sizes: s,p,d, and f. An s subshell (apartment) has only a single room. A p subshell has 3 rooms. A d subshell has 5 rooms, while an fsubshell has 7 rooms. An s subshell then will hold a maximum of 2 electrons according to the model. 2) A p subshell will bold a maximum of how many electrons? 3) How many will a d subshell hold? lo e lect@n)ã.ã 4) How many will an fsubshell hold? Iy cles tiou Each room in a subshell is called an orbital. From the previous question we know that a s subshell will consist of one orbital with a capacity (occupancy) of 2 electrons. 5) A p subshell will consist of 3 orbitals with a total subshell capacity of electrons. 6) A d subshell will have 7) Anf subshell will have orbitals and a total capacity of lo_ electrons orbi electrons. The first shell (floor) has only 1 subshell (apartment), which is an s subshell Because of its location on the first shell, it is called a ls subshell 8) How many orbitals(rooms) are there in the Is subshell? 9) How many electrons will the subshell hold?-- a. The second shell (floor) only has an s subshell (apartment) and a p subshell 10) If the s subshell is called 2, what do you suppose the p subshell is called? 11) How many orbitals (rooms) are in that p subshell? 12) How many subshells are in the second shell? 13) How many orbitals are there in the second shell? 14) How many electrons can occupy the second shell? 15) The third shell has 3 subshells: s.p andd 16) What are they called? 17) How many subshells are in the third shell? 18) How many orbitals are in the third shell?