Final answer:
The nurse should place the chest lead (V1) on the fourth intercostal space at the right sternal border.
Step-by-step explanation:
To place the chest lead (V1), the nurse should locate the fourth intercostal space at the right sternal border, also known as the fourth rib space on the right side of the sternum. The electrode should be placed there. The chest lead (V1) helps to record the electrical activity of the heart in that specific area.