NOTES – NOV 27 WRITE IT DOWN

An unidentified element has many of the same physical and chemical properties as fluorine and chlorine but has a lower atomic mass than either of these elements. What are the POSSIBLE ELEMENTS that fit the description?

The bonding characteristics of Sodium (Na) are most similar to the bonding characteristics of what elements?

COLOR in the UNREACTIVE Group (won’t bond with anything)

Color in the HALOGENS that form HALIDES

COLOR in the group that requires the least energy to form a bond

A measure of the ability of a bonded atom to attract electrons to itself is its’?

ELECTRONEGATIVITY

Write 1 trends that shows INCREASING atomic radii

WRITE ANOTHER trend that shows INCREASING atomic radii

What is the difference between an ion and an atom?

IONS = have a charge ATOMS = neutral

How many valence electrons do all ions want?

8

If I have 7 valence electrons am I likely to gain an electron or lose the 7 electrons?

Easier to gain 1 then lose 7

If I have 2 valence electrons….am I likely to gain 6 valence electrons or lose the 2 electrons?

Easier to lose 2 then try to get 6 more……

How many valence electrons does group 16 have (it is not 16)

6

How many valence electrons does group 2 have?

2

DO we EVER talk about valence electrons in the middle (transitional metals)?

NO....NO….NO…NO…and ….NO (only the FIXED charge groups)

SHOULD you ever assume that LIKE Group 3….has 3 valence electrons

(the answer is no ….no..no.. no..and no)

Which group does not need any more VALENCE electrons ?

GROUP 18 (NOBLE GASES)

Nitrogen =

Nitrogen = Nitride

Sulfur =

Sulfur = Sulfide

Oxygen =

Oxygen = Oxide

Fluorine =

Fluorine = Fluoride

Arsenic =

Arsenic = Arsenide

Iodine =

Iodine = Iodide

MOST IMPORTANT DO you know the charge of GROUP 1 and 2?

MOST IMPORTANT DO you know the charge of GROUP 1 and 2? WHY EVER USE A ROMAN NUMERAL on those groups then…..