(b) An atom of an element is represented by the symbol 40 X 15 ) State the mass number of the atom
(id) What is the atomic number of the atom?
(ui) How many neutrons are present in the atom?​

Based on the data in your tables, did the light-colored moths have a higher or lower survival rate after the industrial revolution?

How is transcription similar to translation in terms of base pairing?

Which statement about relative potential energy of electrons is correct? a. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 2 s orbital of the second electron shell. b. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 3 p orbital of the third electron shell. c. an electron in the 3 p orbital of the third electron shell has more potential energy than an electron in the 2 p orbital of the second electron shell.