Question

Which of the following statements about 238 92
U is not true ? 1
(A) The number of electrons in an atom of U is 92. (B) The number of neutrons in an atom of U is 238. (C) The mass number of U is 238. (D) The number of protons in an atom of U is 92

Answer 1

Answer:

In an atom , the number of neutrons is 58.7% more than that of protons. The number of electrons in the neutral atom is 92. Find out the number of protons , neutrons and mass number and represent the atom with atomic number and mass number.

Solution :

Since the number of electrons in the neutral atom is 92.

∴ Atomic number (Z) is 92 and number of protons is 92

Number of neutrons =92+58.7×92100=146

Mass number (A) =atomic number + number of neutrons

Mass number =92 + 146 =238

Representation 92.

Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.