The mass is written as a superscript and the charge is written as a subscript in the isotope notation of element X as follows 
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The isotope notation may also be called the nuclear notation of an element. It helps us to identify what element is represented. It usually comprises of the atomic mass of the element written as a superscript and then the atomic number or charge written as a subscript.
In this case, we have an element with an mass of 292 amu and charge of 119. In this case, the isotope notation of element X is .
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B.it is not balanced for charge or for number of atoms.
Answer:
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Explanation:
A. Large atoms have valence electrons farther from the nucleus and lose them more readily, so they are more reactive than small atoms.
For example, the valence electron of a small atom like Li is tightly held. <em>Lithium gently fizzes</em> on the surface as it reacts with the water to produce hydrogen.
In contrast, the valence electron of a large atom like Cs is so loosely held that <em>cesium exlodes </em>on contact with water.
