Atoms are electrically neutral because the number of protons, which carry a 1+ charge, in the nucleus of an atom is equal to the number of electrons, which carry a 1- charge, in the atom. The result is that the total positive charge of the protons cancels out the total negative charge of the electrons so that the net charge of the atom is zero. Most atoms, however, can either gain or lose electrons; when they do so, the number of electrons becomes different from the number of protons in the nucleus. The resulting charged species is called an ion.
Explanation:
Use the molecular formula to find the molar mass; to obtain the number of moles, divide the mass of compound by the molar mass of the compound expressed in grams.
Mark Brainliest please
Answer :
In my opinion , answer is A
Answer:
Energy level where all chemical reactions occur. The remaining electrons are 'core' electrons that do not react.
Explanation:
Answer:
magnesium
Explanation:
1s^2 2s^2 2p^6 3s^2 3p^2 = 14
magnesium is 14th in the periodic table
3p^2 because you have said that 3p subshell is filled with two electrons only.
