Contact us
Choose a category below so we can get back to you as quickly as possible.
能用R2表示的單質,都是雙原子分子的單質,還有些是單原子分子的單質不能用R2來表示.比如金屬單質,稀有氣體單質,碳單質,磷單質,要根據單質的結構確定化學式
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.