2007-10-28 03:07:42 · 19 answers · asked by pinkbell11 1 in Science & Mathematics ➔ Other - Science
Sodium and Potassium.
2007-10-28 03:09:30 · answer #1 · answered by Gary D 7 · 0⤊ 0⤋
The alkali metals react strongly with water giving off hydrogen gas. The strength of the reaction increases as you move down the group so lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr) react in that order. By the time you get to potassium, the reacton is so vigorous that the hydrogen gas given off is ignited by the heat produced. Below potassium, (rubidium, Caesium, Francium) the reaction is instantly explosive. These metals cannot even be exposed to the moisture in air or they will explode.
2007-10-28 03:19:11 · answer #2 · answered by attakkdog 5 · 0⤊ 0⤋
Both Sodium and Potassium react vigorously with water making these bob sounds but Sodium is the strongest
2007-10-28 03:11:59 · answer #3 · answered by Wozo 2 · 1⤊ 1⤋
potassium & sodium react violently even with cold water
calcium reacts lesss violently with water
magnesium reacts with hot water
aluminium,zinc & iron react with steam
metals lying below these metals in the reactivity series do not react with water
2007-10-28 03:35:52 · answer #4 · answered by Anonymous · 0⤊ 0⤋
group one on the periodic table are highly reactive metals with water. the further down the periods you go the more reactive they are as well.
REACTIVITY SERIES FOR GROUP 1 METALS IN WATER
MOST REACTIVE
Francium
Caesium
Rubidium
Potassium
Sodium
Lithium
LEAST REACTIVE
Hope you found this useful.
2007-10-28 03:22:34 · answer #5 · answered by Anonymous · 0⤊ 0⤋
I dont know the exact answer to this question as i need more details. If u're referring to all the elements up to calcium then Potassium should be most reactive. But otherwise, Fr is probably the most reactive i know of since it is the lowest element in group 1. Hope this helps.
2007-10-28 03:11:09 · answer #6 · answered by Anonymous · 1⤊ 1⤋
I believe sodium reacts violently when dropped in water.
2007-10-28 03:10:15 · answer #7 · answered by diogenese_97 5 · 0⤊ 0⤋
Look at the anhydrides. Look at the alkali metals in column I of the periodic table (except hydrogen).
2007-10-28 17:36:51 · answer #8 · answered by Frank N 7 · 0⤊ 0⤋
Sodium will explode in contact with water. Below is an example.
2007-10-28 03:14:12 · answer #9 · answered by eric l 6 · 0⤊ 0⤋
alkaline metals found in group one of the periodic table like francium, caesium, lithium and potassium and sodium
2007-10-28 06:16:41 · answer #10 · answered by titan 2 · 0⤊ 0⤋