*an atom has 25 protons, 30 neutrons, and 25 electrons. what is the charge of the atom's nucleus?
a. +25
b. +30
c. -25
d. -30
explain why you got the answer because i don't get this and i have a test next week about this, you! plz

What are similarities and differences between refraction, reflection, diffraction and absorption?

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Match each vocabulary term to its definition. 1. electrons neutral subatomic particles found in the nucleus of the atom 2. neutron lowest energy position of an electron in an atom 3. photon the path of an electron around the nucleus of an atom 4. ground state negatively charged, subatomic particles 5. protons packet of energy of specific size 6. element substance with only one type of atom 7. orbital positively charged, subatomic particles found in the nucleus of the atom