Ayear ago if an element has 12 protons and 17 neutrons, how many electrons must it have?

if given element is neutral, than it has to have same number of protons and electrons. so in this case it is 12 electrons.

Hope it helps :)

If this element does not have any charge, then there would be 12 electrons.

If it releases 5 tons a day and there are 7 days a take that answer and multiply by 5 percent (0.05) to find the amount released in one week. leave a comment if you need more .