ESCA can identify elements in the periodic table above which of the following?
A. Carbon
B. Boron
C. Helium
D. Potassium
Answer:C
ESCA can identify elements in the periodic table above which of the following?
A. Carbon B. Boron C. Helium D. Potassium
Explanation: ESCA can identify elements in the periodic table above helium. Adjacent elements are clearly distinguished.