Question
Which of these are magnetic? Cobalt [ALL of these] Calcium Chromium
Answer
3.5
(259 Votes)
Irene
Expert · Tutor for 3 years
Answer
Cobalt
Explanation
## Step 1: Let's discern the magnetic properties for each of the provided elements. ## Step 2: Cobalt (Co) is a transition metal known for being ferromagnetic, meaning it can be magnetized or attracted to a magnet. ## Step 3: Calcium (Ca), while it is a metal, it's an alkaline earth metal that does not have any magnetic properties. ## Step 4: Chromium (Cr) has some magnetic properties, but it is not considered as magnetically attractive. It is not ferromagnetic at room temperature. ## Step 5: As we evaluated each element individually, we've now to consider the option "[ALL of these]", which implies that Cobalt, Calcium and Chromium are all magnetic. Based on our evaluations from Step 2 through Step 4, we learned that only Cobalt is magnetic and hence, "[ALL of these]" is not a correct option.