Answer:
three valence electrons
Explanation:
Gallium has three electrons in the outer energy level and therefore has three valence electrons. The identification of valence electrons is vital because the chemical behavior of an element is determined primarily by the arrangement of the electrons in the valence shell.
68.7g
molar mass of Ba(137.327)x (.500)= 68.6635
.500 has 3 sig figs.
Answer:
2 electrons
Explanation:
Since the atomic structure is at it's neutral state
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