Which of the following statement(s) are true about the atoms of any element? a. The number of protons in an atom of an element is unique to each element.
b. The number of protons and neutrons in an atom of an element is unique to each element
c. A proton in an atom of one element is identical to a proton in an atom of another element.
d. The number of protons in an atom of an element is the same for all elements.

a

Explanation:

an atom of the same element can have different numbers of neutrons when it is an isotope. an atom's number of protons makes it unique from other elements.

integrated circuit (ic) is defined as a set of electronic circuits on one small flat piece of semiconductor material, normally silicon. a functional electronic circuit requires transistors, resistors, capacitors, inductors, etc., and the connections between them.

your answer is "the 1950's"