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What is the electron configuration of the element in group 4A and period 4 of the periodic table?
a. [Ne]3s 3p?
c. [.4r]3d104324p
b. [.4r3452
d. [Ar]45*4p?

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.

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