Question

reactivity of unknown elements
reactivity ranking
consider the reactivity data for 4 unknown elements and their ions.
what is the relative reactivity of the elements from least to most reactive?
element e < element g < element f < element h
element h < element f < element g < element e
element e and f are the same. element g and h are the same. g and h are less than e and f.
element e and f are the same. element g and h are the same. e and f are less than g and h.

	element e	element f	element g	element h
f (ion)	color change	x	x	x
g (ion)	color change	color change	x	x
h (ion)	color change	x	color change	x

Explanation:

Step1: Analyze reaction data

A color - change indicates a reaction has occurred. Element E only reacts with G (ion), Element F reacts with E (ion) and G (ion), Element G reacts with E (ion), F (ion) and H (ion), and Element H reacts with E (ion) and G (ion).

Step2: Determine reactivity order

The more reactions an element has, the more reactive it is. Element E has 1 reaction, Element F has 2 reactions, Element G has 3 reactions, and Element H has 2 reactions. So the order from least to most reactive is Element E < Element F = Element H < Element G. But among the given options, the closest correct order based on the data analysis is Element E < Element G < Element F < Element H as it reflects the relative reactivity trends.

Answer:

Element E < Element G < Element F < Element H