Answer:
(i). The elements that tend to create a cation
(C). calcium, (D). barium, (E). cesium, (F). rubidium, (G). lead and (H). scandium
(ii). The elements that always form ionic compounds in a 1:2 ratio with halogens
(B). lead, (G) barium and (I). calcium
Explanation:
Considering that,
The following elements list,
A. oxygen B. chlorine C. calcium D. barium E. cesium F. rubidium G. lead H. scandium I. phosphorous
It is understood that,
A cation is defined as an element that can easily donate an electron and transforms into a positive ion.
All metal elements have the capability to form cations.
We are tasked with identifying the elements likely to produce a cation
Based on the provided list
(C). calcium
(D). barium
(E). cesium
(F). rubidium
(G). lead
(H). scandium
(II). In the next list,
A. phosphorous B. lead C. chlorine D. cesium E. rubidium F. scandium G. barium H. oxygen I. calcium
It is known that,
All metal ions listed can create ionic compounds with halogens at a 1:2 ratio because all given metals can form +2 charges.
This indicates the necessity to find those elements that will invariably form ionic compounds in a 1:2 ratio with halogens
Using the provided list.
(B). lead
(G) barium
(I). calcium
Thus, (i). The elements that can create a cation
(C). calcium, (D). barium, (E). cesium, (F). rubidium, (G). lead and (H). scandium
(ii). The elements that will consistently form ionic compounds in a 1:2 ratio with the halogens
(B). lead, (G) barium and (I). calcium
