Question

Which of the following items are true of early nuclear science?
(Multiple choice)

•The first nucleus split was uranium-235.
•The first nuclear reactions were done in the 1880’s.
•Albert Einstein himself caused the first nuclear reaction.
•some mass of the nucleus was lost in the first nuclear reaction.

Answer 1

the one is b the one is b ik

Answer 2

Answer:

some mass of the nucleus was lost in the first nuclear reaction.

Explanation:

In a nuclear reaction, mass is converted to energy according to Einstein's equation;

E=∆mc^2 where ∆m is known as mass defect. The mass defect arises due to the conversion of part of the mass of the nucleus into energy in a nuclear reaction. c is the speed of light 3×10^8 ms^-1

By so doing, Albert Einstein confirmed that mass and energy are inter convertible in a nuclear reaction.