Question

A certain nucleus P has a mass number 15 and atomic number 7. (i) Find the number of neutrons and protons. (ii) Write the symbol for the nucleus P.

Answer 1

Answer:

Name of atom is Nitrogen

Symbol of Nitrogen

Answer 2

${\huge{\sf{\red{\underline{\underline{ ÅÑSWËR}}}}}}$

$\huge\bold\blue{Given:}$

For the nucleus P,A=15,Z=7

i). Mass Number A

=number if protons + number of neutrons and atomic number Z=number of protons.

Therefore,

Number of neutrons

=mass number A-atomic number Z

=15-7

=8

ii) The nucleus P can be written as

15 P

7

hope its helpfull