Question

Which of the following is not a physical property of hydrogen?

a. It is soluble in water

b. It is highly inflammable

c. It burns with a blue flame

d. It is adsorbed by certain metals​

Answer 1

Answer:

A

Explanation:

hydrogen is almost insoluble in water,

Answer 2

d. It is adsorbed by certain metals.

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Reason:

Because, Hydrogen is a nonmetal and is placed above group in the periodic table because it has ns1 electron configuration like the alkali metals. However, it varies greatly from the alkali metals as it forms cations (H+) more reluctantly than the other alkalimetals. However, hydrogen is very different from the halogens.