An atom or ion has 42 neutrons , 36 protons, and 36 electrons. Identify the element symbol, and determine the mass number and charge for this atom or ion.

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Explanation:

number of electrons=36

number of protons=36

number of neutrons=42

mass number=number of protons+number of neutrons

mass number=36+42

mass number=78

so the element will be krypton Kr

as elements are identified on their number of electrons so this atom is krypton

as the actual atomic mass of krypton is 86 here the calculated atomic mass is 78 so krypton has loss 8 electrons but this must require a great amount of energy so the charge on krypton is +8

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation:

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.