In a TEST! Consider the nuclear equation below. Superscript 239 subscript 94 upper P u right arrow variable X plus superscript 4 subscript 2 upper H e. What is X? Superscript 235 subscript 96 upper C m. Superscript 243 subscript 92 upper U. Superscript 235 subscript 92 upper U. Superscript 243 subscript 96 upper C m.

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An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of amu. (enter a whole number.) numerical answers expected! answer for blank 1:

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.