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An Element is Soft and Can Be Cut with a Knife. If is Very Reactive and Cannot Be Kept Open in the Air. It Reacts Vigorously with Water. the Element is Most Likely to Be: (A) Mg (B) S (C) P (D) Na - CBSE Class 10 - Science

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Question

An element is soft and can be cut with a knife. If is very reactive and cannot be kept open in the air. It reacts vigorously with water. The element is most likely to be:
(a) Mg
(b) S
(c) P
(d) Na

Solution

(d) Na
Na is soft and can be cut with a knife. It is very reactive and cannot be kept in open air. It reacts vigorously with water.

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Solution An Element is Soft and Can Be Cut with a Knife. If is Very Reactive and Cannot Be Kept Open in the Air. It Reacts Vigorously with Water. the Element is Most Likely to Be: (A) Mg (B) S (C) P (D) Na Concept: Metals and Nonmetals - Chemical Properties of Metals - When Metals React with Water.
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