题目内容

K ion has an oxidation number of ()

A. +1
B. +2
C. 0
D. -1

查看答案

搜索结果不匹配？点我反馈

更多问题

Choose the right characterization of hydrogen()

A. 氢元素与氢原子表述为hydrogen,氢气的表述为bihydrogen。
B. 氢元素与氢原子表述为hydrogen,氢气的表述为dihydrogen。
C. 氢元素与氢原子表述为hydrogen,氢气的表述为hydrogens。
D. 氢元素、氢原子与氢气的表述都为hydrogen。

查看答案

Choose the right characterization ()

A. Group 2 elements are called "alkali metals".
B. Graphite is one of the hardest known materials.
C. Lithium is a Group 1 element containing just a single valence electron.
D. Helium gas is diatomic gas.

查看答案

添加电解质不利于凝胶形成。( )

查看答案

单链憎水基和较大极性基的分子或离子容易形成球状胶束。( )

查看答案

K ion has an oxidation number of ()

A. +1 B. +2 C. 0 D. -1

Choose the right characterization of hydrogen()

Choose the right characterization ()

添加电解质不利于凝胶形成。( )

单链憎水基和较大极性基的分子或离子容易形成球状胶束。( )

A. +1
B. +2
C. 0
D. -1