It is either mass or volume
Answer:
Kr is a Noble Gas. Na is an alkali metal. F is halogen.
Group 17 is halogens. Inert is Noble Gases. Odourless and colourless is Noble Gases. Alkali metals do not occur freely in nature. Alkali metals are malleable
Explanation:
<h2><em>It is True that every bronsted-lowry acid is also a lewis acid </em></h2>
