What is an atom? and what 2 regions make up all atoms?

4 answers
Question:

What is an atom? and what 2 regions make up all atoms?

Answers

An atom is the smallest particle that cannot be split.
Two regions that make up an atom are the nucleus, that is in the center of the atom and contains protons and neutrons, and outer part of an atom that holds electrons.

An atom is composed of two regions: the nucleus, which is in the center of the atom and contains protons and neutrons, and the outer region of the atom, which holds its electrons in orbit around the nucleus.

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

i think its 100

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