An atom that undergoes radioactive decay and has a large nucleus most likely has:

a) a neutron number higher than the proton number.
b) a proton number higher than the neutron number.
c) an electron number higher than the proton number.
d) a proton number higher than the electron number.

The atom that undergoes radioactive decay and has a large nucleus most likely has a neutron number higher than the proton number.

Explanation:

Unstable isotopes are defined as the isotopes which have more number of neutrons as compared to the stable form of an atom.

These isotopes attain stability by undergoing a spontaneous nuclear decay. The isotopes which are unstable are also known as radioactive isotopes or radioisotopes.

There are 4 types of radioactive decay by which an unstable nucleus attains stability. They are alpha decay, beta decay, gamma decay and positron decay.

Hence, the atom that undergoes radioactive decay and has a large nucleus most likely has a neutron number higher than the proton number.

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.