Question

1.Which of the following is less violent with water?
a. sodium
b. magnesium
c. calcium
d. potassium

2.Which of the following is react violently with cold water?
(i)sodium
(ii) magnesium
(iii) calcium
(iv) potassium
a. (i)&(ii) b.(i)&(iv)
c. (ii) &(iv) d. (ii) &(iii)

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Answer 1

Answer:

1. magnesium has less reaction in water

2. b (i)&(iv)

because sodium and potassium are very violent in cold water

Answer 2

Answer:

1.reaction of calcium

2.sodium and pottasium reacts violently with cold water

Explanation:

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