Bohr Diagrams Of Ions

Question 1

Do noble gasses form compounds?

Answer 1

No, because they have 8 electrons in their outer orbit (shell). This electron arrangement makes them very stable and so they do not react.

Question 2

How do you make a compound stable?

Answer 2

Changes occur in the arrangement of electrons in the outer bit.

1. Electrons are gained/lost so that element can have a stable electron arrangement of the closest noble gas.
2. In order for a compound to be stable, it must have a completely filled outer electron shell (a.k.a stable octet)

Question 3

How do Metal ions become stable?

Answer 3

1. They tend to have 1, 2, or 3 electrons in the outer orbits (shells).
2. They lose electrons when they combine with other elements to form positive ions (called cation - think t = +)
3. They lose electrons, so they have the same electron arrangement as the Nobel gas a row above them.

Question 4

How do Non-Metal ions become stable?

Answer 4

1. They tend to have 4, 5, 6, or 7 electrons in their outer orbits (shells).
2. They gain electrons to form negative ions (called anions).
3. They gain electrons so they have the same electron arrangement as the Nobel gas in the same row.

Question 5

How many valence electrons does the B (element) have? How many electrons are gained/lost to make the atom stable? What charge is on the ion?

Answer 5

• # of valence electrons: 3
• Lose 3
• +3

Question 6

How many valence electrons does the atom “Ne” have? How many electrons are lost/gained to make the atom stable? What charge is on the ion?

Answer 6

• # of valence electrons = 8
• Neutral
• Neutral

Question 7

What is true about atoms?

Answer 7

1. Generally have neutral charge (# of p+ = # of e-)
2. Try to become stable and have a full outer shell of electrons like the closest Nobel gas.
3. Lose/gain e- and becomes a charged ION.
4. Movement of electrons allow
   1) atoms to form into compounds
   2) chemical reactions to occur

**ion formed has the same electron arrangement as the CLOSEST Nobel gas

Question 8

What’s true about valence shell electrons?

Answer 8

1. The electrons are on the outer shell (valence shell).

2. Only the valence e- can move.

Question 9

What are ions?

Answer 9

A charged particle formed by the gain or loss of an electron.

Question 10

What is the definition of Isoelectric?

Answer 10

Atoms & ions that have the same electron arrangement as each other.

Question 11

What is a cation?

Answer 11

A positively charged ion that is formed when an atom loses electrons.

Question 12

What is an anion?

Answer 12

A negatively charged ion that is formed when an atom gains electrons.

Question 13

What is the definition of Combining Capacity?

Answer 13

The number of electrons that an element needs to gain/lose to be a stable ion.