Sponsored Links
This presentation is the property of its rightful owner.
1 / 18

# Periodic Table Trends PowerPoint PPT Presentation

Periodic Table Trends. Atomic Radius. Half the distance between the nuclei of two identical atoms bonded together. Atomic Radius. Atomic Radius. Across a Period= DECREASES As you add more protons, the attractive force of the nucleus increases, pulling electrons in more closely

### Download Presentation

Periodic Table Trends

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

## Periodic Table Trends

### Atomic Radius

• Half the distance between the nuclei of two identical atoms bonded together

### Atomic Radius

• Across a Period= DECREASES

• As you add more protons, the attractive force of the nucleus increases, pulling electrons in more closely

• Down a Group=INCREASES

• As you add more energy levels, the size of the electron cloud increases

### Which of the elements would have the largest radius?

• 13-Aluminum

• 14-Silicon

• 17-Chlorine

• 12- Magnesium

• 16-Sulfur

### Ionization Energy

• The energy required to remove one electron from a neutral atom.

• High I.E. – Harder to lose

electrons

• Low I.E. –Easier to lose

electrons

### Ionization Energy

• Across a Period=INCREASES

• Electrons are closer to nucleus, therefore harder to remove

• Down a Group=DECREASES

• Electrons are farther from the nucleus, therefore easier to remove

### Which element would have the lowest ionization energy?

• 20- Calcium

• 56- Barium

• 4- Beryllium

• 38- Strontium

• 12-Magnesium

### Electron Affinity

• The energy released when a neutral atom acquires an electron.

• Elements that really want another electron tend to release more energy (higher E.A.)

Across a period= INCREASES

Down a group= DECREASES

### Electronegativity

• The ability of an atom to attract electrons

• The most electronegative element is fluorine

Across a Period= INCREASES

Down a Group= DECREASES

### Which of the elements would have the highest electronegativity?

• 13-Aluminum

• 14-Silicon

• 17-Chlorine

• 12- Magnesium

• 16-Sulfur

### METALS vs NONMETALS

• METALLIC CHARACTER

• Lower I.E. (tend to lose e-)

• Lower E.N. (don’t want e-)

• High Luster (shiny!)

• Good Conductors

• Malleable and Ductile

• MOST METALLIC ELEMENT:

• NONMETALLIC CHARACTER

• High I.E. (don’t want to lose e-)

• High E.N. (tend to gain e-)

• Dull (no luster)

• Poor Conductors

• Brittle as solids

• MOST NONMETALLIC ELEMENT:

Francium

Fluorine

### Which of the elements would be the least reactive metal?

• 13-Aluminum

• 14-Silicon

• 17-Chlorine

• 12- Magnesium

• 16-Sulfur

### Which of the elements would be the most reactive nonmetal?

• 13-Aluminum

• 14-Silicon

• 17-Chlorine

• 12- Magnesium

• 16-Sulfur

### 37-Rubidium would have all of the following characteristics except?

• High Conductivity

• High Malleability

• High Brittleness

• Solid at Room Temperature

• 1 Valence Electron

### 35-Bromine would have which one of the following characteristics?

• High Conductivity

• High Malleability

• High Brittleness

• Solid at Room Temperature

• 7 Valence Electrons