Periodic Table Groups

Question 1

Alkaline earth metals

Answer 1

2 electrons outermost shell. Groups 2, reactive but slower than group 1, less heat produced

Question 2

lanthanides

Answer 2

group does not fit typical periodic table type, metals are silvery white, tarnish on contact with air.
eg. lanthanum

Question 3

actinides

Answer 3

only thorium and uranium exist naturally on earth. radioactive- unstable nucleus in atom.

Question 4

transition metals

Answer 4

hard but maileable, shiny, good conductivicty.
examples: gold (AU), silver (AG), iron (FE)

Question 5

post transition metals

Answer 5

moving towards non-metal world- softer, conduct poorly, below the “staircase”.

Question 6

metalloids

Answer 6

form the “staircase”. moving to non-metals, sei conductors, poor metals.

Question 7

non-metals

Answer 7

above the “staircase” reactive with metals

Question 8

halogens

Answer 8

group 7, chemically reactive pair up with Alkali metals to make salts (sodium and chlorine)

Question 9

Noble gases

Answer 9

inert gases, group 8. colourless, odourless, non-reactive by nature calming effect eg. lightbulbs or storing an alkaline metal.