Day 5 2-19Use your colored periodic table:

1. Where are the alkaline earth metals on the periodic table?

2. Neon is a __________.

3. The elements in the middle of the periodic table (or the d-block are called the _________________.

noble gas

transition metals

How is the periodic table arranged?

Metals

Excellent conductors (Sea of electrons) even as solids

Mobile electrons

Metals are malleable and ductile

Can be pounded into sheet

Can be pulled into wire

Read / review Section 6.2 and

complete #s 11-17 on page 173

Day 6 2-201. Most reactive metals =

the _______ metals.

2. Least reactive metals = _________.

3. Most reactive nonmetals = ________.

Day 6 2-201. Elements with the same # of valence are in the same _______ on the periodic table.

alkali metals = __ valence

alkaline earth metals = __ valence

halogens = __ valence

noble gases = __ valenceWe are taking an ATB quiz on today’s ATBs in 5 minutes.

Periodic TrendsAtomic radius:- Measure of size – radius of an atom- Atoms with more electrons do NOT necessarily have a larger atomic radius

Periodic Trends- Atoms with more electrons do NOT necessarily have a larger atomic radius

Periodic Trends- Atoms with more electrons do NOT necessarily have a larger atomic radius

1. Atoms get larger going down a group.

2. Atoms get smaller going across a period

So why?...

Periodic Trends- Atoms with more electrons do NOT necessarily have a larger atomic radius

As you move down a group you increase the number of energy levels in the atom and so the atom gets larger as expected.

Periodic Trends- Atoms with more electrons do NOT necessarily have a larger atomic radius

As you move across a period, # of protons increases and outermost energy level stays the same, the attractive force between elecs. and pros. pulls the atom tighter (closer to nucleus)

Periodic TrendsWhat’s bigger:

B or Al

B or N

N or Zn

C or Cl

Read / review Section 6.2 and

complete #s 11-17 on page 173

Day 1 2-211. Which halogen is found in period 2?

2. How many valence electrons does calcium have?

3. Why does the size of an atom increase moving down a group?

Red = ?Green = ?Blue = ?

Good Conductors = ?

Inert elements = ?

Review1. What element is in Group 2,

Period 3?

2. Name an element in Group 3

3. How many valence electrons in Xe?

4. Give me an element with 1 valence electron.

Partner Review1. What element is in Group 17,

Period 3?

2. What family of elements is the element above in?

3. How many valence electrons does it have?

Periodic TrendsWhat are ions?

- atoms that are charged due to the loss or gain of

electrons- If an atom loses elecs. it becomes smaller and positive

- If an atom gains elecs. it becomes larger and negative

Notes page 4

Periodic TrendsWhat are ions?- If an atom loses elecs. it becomes smaller

- If an atom gains elecs. it becomes larger

PAGE 176-179Which elements gain elecs.? Which elements lose elecs.? Pattern?

Periodic TrendsElements on the right side of the periodic table form _________ ions

Elements in the same group form ___________ ions

negative

The same

Periodic TrendsWhat’s bigger:

F or F-

Na or Na+

Na or Rb

Na of Al

F or Cl-

Day 6 2-201. Most reactive metals = the ____________

metals.

2. Elements with the same # of valence are in the same ___________ on the periodic table.

3. Halogens = _____ valence.

Day 6 2-201. Most reactive nonmetals = the _________.

2. Elements with the same # of valence are in the same ___________ on the periodic table.

3. Alkali metals = _____ valence.

Day 6 2-201. Least reactive metals = the

____________ metals.

2. Elements with the same # of valence are in the same ___________ on the periodic table.

3. Alkaline earth metals = _____ valence.