3.1.8: Group 2 elements: redox reactions

Question 1

what is the common name for group 2 elements?

Answer 1

alkaline earth metals

Question 2

does the reactivity increase or decrease down the group?

Answer 2

increases down the group

Question 3

what are the physical properties of group 2 elements?

Answer 3

• high melting and boiling points
• light metals with low density
• form colourless (white) compounds

Question 4

why does the reactivity increase down group 2?

Answer 4

each successive element has its outer electrons at a higher energy level, a larger atomic radius and more shielding

Question 5

how do group 2 elements react with water?

Answer 5

all elements except Be react with water the form hydroxides

Question 6

how do group 2 elements react with dilute acids?

Answer 6

all elements except Be react with dilute acids to form a salt and hydrogen gas