Unit 3 chemistry (periodic table element groups)

the alkali metals

What was group 1

very reactive

Are group 1 (alkali metals) reactive

No

do group 1 metals (alkali) occur naturally in nature

1 valence electron

How many valence electrons are in group 1 (alkali)

Good conductors, malleable, ductile

what are the 3 characteristics of all metals

Soft

Are alkali metal soft or hard

francium and cesium

What are the two most reactive elements in group 1 (alkali metals)

it reacts stronger to water and produces heat/ gas

what happens when alkali metals are exposed to water

alkaline earth metals

What is group number 2

yes

Are alkaline earth metals reactive

No

do alkaline earth metals occur freely in nature?

2

how many valence electrons are in alkaline earth metals

Group 3-12

what group numbers are transition metals?

Valence electron numbers vary

How many valence electrons are in transition metals

what block are transition metals in

D-block

iron, cobalt, nickel

what 3 metals in transition metals are magnetic

lustrous, hard, high melting points

3 characteristics of transition metals

Hg- has entire d-orbital filled with no covalent bonds

which element in transition metals is an exception

7 elements

How many elements are in the other metals

13,14, and 15

What group numbers are the other metals in

Transition metals are more eager to form bongs

How are the “other” metals different to the transition metals

solid, high density

three physical properties of the “other” metals

boron

Under what element does the Metalloid stair case start under

metals and non-metals

what do Metalloid s have properties of

can carry electrical charge under special conditions

Semiconductors

silicon and germanium

name 2 Metalloid that are semi-conductors

computers- conductors

what property makes Metalloids useful

14-18

What groups are nonmetals in

poor conductors, not malleable, ductile, brittle

4 characteristics of all nonmetals

gas and solid

what two states of matter do nonmetals exist in at room temperature

Metallic luster so they do not reflect light

what do non metals not have

Halogens

What is group 17

are halogens metals or nonmetals

non metals (most reactive nonmetals

how many valence electrons are in halogens

7

Salt-former

what is a term for halogens

salts

what are compounds containing halogens called

gas liquid and solid

what states of matter do halogens exist in at room temperature

noble gases

what is group 18

8

how many valence electrons are in noble gases

stable

are noble gases stable or inert

15

How many rare earth metals are there

man-made

Trans-uranium

4 actinides

How many noble gases are naturally occurring

f-block

What block are the rare earth elements