Question

Q-20 Elements of s-block and those of group 16 and 17 are most reactive. The element place
in the middle of the periodic table are less reactive. Reactive metals do not occur in nature in
free state. Reactive metals combine with 02, moist air, water etc. and exist in combined state
in nature. Nobel metals are found in free stare. Nobel gases are almost unreactive. Similarly,
some students are aggressive and some are sober. Now answer the following questions: 3
i) Why do we keep sodium and potassium in kerosene?
ii) Why do we keep white phosphorus in water?
Which elements react with cold water, which react with hot water and which
react with steam?​

Answer 1

Answer:

jsjshsjsjhshshshshshjsjsjejehehriejwklekejekekwnejjwkwkwkwkwkwkwkaksjisjshrhekjejrhrjwkejejjejwjejejeje