【Daily Question】1.18 On hydrogen corrosion (3 wealth points for replies; +3 to –8 wealth points for correct answers)

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Question content: Judgment: H can penetrate into metals and diffuse within them. H2 cannot penetrate metal, nor can it diffuse within it. ( ) Regarding the requirements for answering the questions and the hints: Answer carefully. Hint: You can guess if you’re unsure. Please note: We will close this thread after 24 hours, and at that time we will announce the best response (the best help), as well as the answers and explanations. Other details: Recruitment for moderators & technicians in the [Mechanical Section] – applications and referrals are welcome. 【Valid indefinitely】【If you’re interested, come ahead!】 】(Click to enter) 【Mechanical Zone】Comprehensive guide to preventing equipment freezing over during winter 【Mechanical Zone】Call for collection of essential knowledge 【Seeking manufacturer sponsors】(Ongoing campaign) Rewards for recommending valuable content; the “Active Users and Weekly Stars” competition in the Mechanical Zone has begun. Wealth, metals, corrosion, zones, machinery