The atomic number of a nucleus is the number of: a electrons b protons c neutrons d nucleons

B protons

Explanation:

- The atomic number of a nucleus (often labelled with Z) is the number of protons inside the nucleus

- The mass number of a nucleus (often labelled with A) is the sum of the protons and the neutrons inside the nucleus

- The number of electrons in a neutral atom is equal to the number of protons inside the nucleus

Therefore, the correct answer is

B protons

However, A (electrons) could also be considered correct if we are talking about a neutral atom.

show the diagram then i will answer

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.