1 / 17

Periodic Trends

Periodic Trends. Test Your Knowledge. Metals, Nonmetals, Semimetals. Use M for metal N for nonmetal and S for semimetal Answer the following. Metals, Nonmetals, Semimetals. Classify Indium. Classify Hydrogen. These tend to be electron givers.

Gabriel
Download Presentation

Periodic 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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Periodic Trends Test Your Knowledge

  2. Metals, Nonmetals, Semimetals • Use M for metal • N for nonmetal and • S for semimetal • Answer the following.

  3. Metals, Nonmetals, Semimetals • Classify Indium. • Classify Hydrogen. • These tend to be electron givers. • Which metalloid is most important to the computer industry? • Classify Al. • How many metalloids are there? • Classify the halogens. • Which family (column) has only one metal? • Which nonmetal is liquid at room temp? • Which two valence electron configurations do we associate with most metals?

  4. Answers • Metal • Nonmetal • Metal • Si • Metal • 8 • Nonmetal • V or 15 (Bi is the only metal in the phosphorus family) • Br • s1 or s2

  5. Atomic Radius • Going down a column, how does radius change? • Going across a row left to right, how does radius change? • Which has greater radius: Fe or La? • Te or F? • B or C? • Pu or Fr?

  6. Answers • Increases • Decreases • La • Te • B • Fr

  7. IE Radius Ionization Energy • Define Ionization Energy or Potential • Which has lower I. E.: K or Ni? • Cl or I? • P or Ga: • Ar or Si? • What are the units of IE? • Draw the proper slope for this graph:

  8. IE Radius Answers • Energy required to remove a valence electron from an atom or ion. • K • I • Ga • Si • kJ/mol or electron volts

  9. Electron Affinity • What are the units of measure for e- affinity? • If E is released, is e- affinity + or -? • Which has greater (-) e- affinity: Cl or Cr? • Li or Cs? • Br or Kr? • Which has a + e- affinity: K or Ca?

  10. Answers • kJ/mole • - • Cl • Li • Br (Kr is a noble gas) • Ca (alkaline earth metal)

  11. Metallic Character • Metallic character is the ability to give away___? • Which has greater metallic character: Mg or Be? • P or Bi? • Br or Sr? • Au or Cs? • The elements in which corner of the per. table have the greatest metallic character?

  12. Answers • Electrons • Mg • Bi • Sr • Cs • Lower left

  13. Electronegativities • Electronegativity is an atom’s attraction for ___? • Generally, metals are more/less electronegative than nonmetals. • Which is more electronegative: P or Cl? • H or He? • H or Li? • C or N? • What are the units of electronegativity? • What is the range of the electronegativity scale?

  14. Answers • Another atom’s electrons. • Less • Cl • H • H • N • Paulings • 0-4

  15. Reactivity • The most reactive nonmetal is _____. • The most reactive metal is _______. • Reactivity increases as one moves toward the ends/middle of the table. • The most reactive nonmetal atoms are the larger/smaller ones. • The least reactive family of elements is the ___. • Which reaction will be more vigorous: Br with K or Na? • Which reaction will be more vigorous: Br with K or Ca? • Why are metals like silver, gold and platinum used extensively for jewelry and coins.

  16. Answers • F • Fr • Ends • Small • Noble gases • K • K • Because they are very unreactive and so last a long time. They are sometimes called ‘noble metals.’

  17. Other questions • Why does radius increase going down a column? • Why does radius decrease going across a row? • Why is it easier to remove electrons from large atoms than from small ones? • Why do the alkaline earth metals and noble gases have + e- affinities? • What characteristics and properties would you predict for tungsten (W) in terms of size (relative to other elements in its column and row), electric conductivity, luster, hardness?

More Related