Question

list the following elements in increasing metallic character. barium calcium chlorine phosphorus zinc cl<p<zn<ca<ba zn<ca<ba<p<cl ba<ca<zn<p<cl p<zn<cl<ca<ba

Explanation:

Step1: Recall metallic - character trend

Metallic character increases down a group and decreases across a period from left to right in the periodic table.

Step2: Identify element positions

Chlorine (Cl) is a non - metal in Group 17, Period 3. Phosphorus (P) is a non - metal in Group 15, Period 3. Zinc (Zn) is a transition metal in Group 12, Period 4. Calcium (Ca) is an alkaline earth metal in Group 2, Period 4. Barium (Ba) is an alkaline earth metal in Group 2, Period 6.

Step3: Compare metallic characters

Since Cl and P are non - metals and Cl is more to the right than P in the same period, P has a higher metallic character than Cl among non - metals. Zn is a metal, Ca is also a metal and in the same period as Zn but more to the left, so Ca has a higher metallic character than Zn. Ba is in the same group as Ca but lower down, so Ba has a higher metallic character than Ca. So the order of increasing metallic character is Cl < P < Zn < Ca < Ba.

Answer:

Cl<P<Zn<Ca<Ba