Group 2 and 7 elements Flashcards
Why are group 2 elements called Alkaline Earth Metals?
They make alkali’s with water
What is another name for group 2 elements?
Alkaline Earth Metals
How many electrons does a group 2 elements lose?
2 electrons
What happens to the group 2 reactivity as it goes down and why?
It increases in reactivity as it goes down because the electrons increase in distance from the nucleus and What happens to the group 2 reactivity as it goes down and why? shielding from nucleus so the electrons will lose
What happens when a group 2 metal reacts with water?
A group 2 hydroxide and hydrogen
What happens when a group 2 metal reacts with oxygen?
A group 2 oxide
What happens when a group 2 metal reacts with dilute acids?
A salt and hydrogen
What is another name for group 7 elements?
Halogens
What happens to reactivity as you go down group 7 and why?
- Decrease
- More sheilding
- More distance between the outer shell electrons
- Weaker nuclear charge on the electrons
What does chlorine look like dissolved in water?
Green
What does bromine look like dissolved in water?
Orange
What does iodine look like dissolved in water?
Brown
