Periodic Table/Trends

Question 1

Group 1

Answer 1

Alkali metals
+1 charge
- 1 valence electron
- shiny & silvery (dull as metal reacts with Oxygen), soft at room temperature

Question 2

Group 2

Answer 2

Alkaline Earth metals
+2 charge
- 2 valence electron
- all other than beryllium react w/ water

Question 3

Group 3-12

Answer 3

Transitional metals
- both ductile and malleable
- conduct electricity and heat
- valence electron r present in more than 1 shell
- iron, cobalt, nickel r the only elements known to produce magnetic field

Question 4

Basic metals

Answer 4

• located in groups 13, 14,15
• r ductile and malleable but r not same as transitional elements bc they dont have varoius ixidation states and valence electron r only present in outer shell
• solid, relatively high density , opaque
• charges r +3, +-4, -3

Question 5

metalloids

Answer 5

• metalloids
• found along the stair line that distinguishes metals from non-metals
• have properties of both metals and nonmetals
• some r semiconductors
• charge r +3, +-4, -3, -2

Question 6

other nonmetals

Answer 6

• elements r in groups 14-16
• not able to conduct electricity or heat very well
• very brittle and cant be rolled into wires or pound into sheets
• exits in 2 states of mattter: gas or solid
• no metallic luster or refelct light
• +-4, -3, -2

Question 7

Group 17

Answer 7

Halogens
- 5 non metallic elements
- salt-former (compounds containing halogens r called salts
- 7 valence electron
- charge is -1

Question 8

Group 18

Answer 8

Noble Gases
- unreactive
- gaseous

Question 9

Name 2 elements tha may be shiny, solid, easy to cut w/ knife + highly reactive

Answer 9

Li, Na, K, Rb, Cs, Fr

Question 10

Name the element in row 5 group 2

Answer 10

Strontium (Sr)

Question 11

Ca, Mg, Sr all make compounds with C1 as CaCl2, etc. What are 3 other elements that can replace Ca

Answer 11

Be, Ba, Ra

Question 12

Name 2 elements that r unreactive gases

Answer 12

helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og).

Question 13

Name element in group 17 and row 4

Answer 13

Bromine

Question 14

Ca, Mg, Sr all make compounds with C1 as CaCl2, etc. What are 3 other elements that can replace Cl

Answer 14

fluorine, bromine, iodine, astatine

Question 15

2 elements that possess properties of metals and nonmetals

Answer 15

Boron, germanium, silicon, antimony, arsenic, tellurium and pollanium

Question 16

element in group 10 and row 7

Answer 16

Darmstadtium

Question 17

3 elements that could repalce Z in chemical formula ZCl3

Answer 17

boron (B), aluminum (Al), gallium (Ga), indium (In), thallium (Tl), and nihonium (Nh)

Question 18

what element can found with F2

Answer 18

Beryllium (Be)
Magnesium (Mg)
Calcium (Ca)
Strontium (Sr)
Barium (Ba)
Radium (Ra)

Question 19

Name the 3 transitional metals that produce a magnetic filed?

Answer 19

• iron
• cobalt
• nickel

Question 20

Pattern of Atomic radius?

Answer 20

closer to bottom left = increases atomic radius
as you go right more protons r pulling the shells closer to the nucleus so it is smaller
as you go down there are more shells (bigger)

Question 20

Pattern of electronegatitivy?

Answer 20

closer to top right = increased electronegativity
as you go down electronegativity decreases bc greater distance from nucleus so there r more electronshielding
as you go right atomic radiuis decreasing and number of protons r increasing so electronegativity increases

Question 21

pattern of ionization energy?

Answer 21

closer to top right = increased ionization energy
as you go down ionization energy decrease bc electrons r further from nucleus
as you go to the right ionization energy increases bc atomic radius decreases and increase in protons = more attraction so its harder to remove the electron