Electron Arrangement

Question 1

Electron Arrangement

Answer 1

Arrangement of electrons around the nucleus in a series of shells or energy levels

Question 2

Capacity of First Shell

Answer 2

The first shell holds a maximum of TWO electrons

Question 3

Capacity of Second Shell

Answer 3

The second shell holds a maximum of EIGHT electrons

Question 4

Capacity of Third Shell

Answer 4

The third shell holds a EIGHT electrons before the fourth shell fills up

Question 5

Core Electrons (C.E.)

Answer 5

-Electrons inside of the inner shell of an atom
-These electrons don’t participate in chemical bonding

Question 6

Valence Electrons ( V.E.)

Answer 6

-Electrons inside of the outermost shell
-Valence electrons participate in chemical bonding

Question 7

Finding out number of V.E and C.E.

Answer 7

The group number of an element tells us how many valence electrons are in an atom and subtract the atomic mass by the number of valence electrons and the answer is the number of core electrons in the element

Question 8

Atom Bonding

Answer 8

Atoms want to bond in order to have a full valence shell of electrons

Question 9

Octet Rule

Answer 9

Atoms are most stable when valence shells are filled with eight electrons

Question 10

Covalent Bonding

Answer 10

-Type of bonding that occurs when two NON-METAL atoms SHARE electrons

All Noble Gases have a full valence shell

Question 11

Covalent Compounds

Answer 11

-Molecules that have covalent linkages
-Forms when two or more non-metal atoms participate in covalent bonding, they form covalent compounds

Question 12

Physical Properties of Covalent Compounds

Answer 12

1. They exist in various states at room temperatures
2. Doesn’t dissolve in water
3. Low Melting and Boiling Points
4. Poor conductors of heat and electricity

Question 13

Ionic Bonds

Answer 13

Bonds between two atoms where the metal gives up electron(s) and donates them to a non-metal which is called an ionic bond

Question 13

What is necessary for an Ionic Bond

Answer 13

-The attraction of cations and anions keep the two atoms together (electrostatic attraction)

Question 14

Physical Properties of Ionic Compounds

Answer 14

1. They are solids at room temperatures
2. Most ionic compounds dissolve in water
3. When ionic compounds dissolve into a solution, the solution will conduct electricity
4. High Melting and Boiling Points

Question 15

Ionic Compounds

Answer 15

Compounds made up of ions that form charged particles when an/some atom(s) gains or loses electrons