**URGENT SCIENCE QUESTION, NO ONES HELPING IN SCIENCE, PLEASE HELP**

Question

fancysharkk · Answer

attachment

agent0smith · Answer

Look at a periodic table. What element has 40 protons?

It has 40 protons and 51 neutrons, then 2 neutrons are added. How many protons plus neutrons are there now?

fancysharkk · Answer

93?

perl · Answer

There are two elements with mass number 93.

fancysharkk · Answer

antimony?

agent0smith · Answer

If you answered both of the questions I asked above, you'd know the answer already.

fancysharkk · Answer

o.o

mathmate · Answer

@FancySharkk 
Hint:
The atomic number is the number of protons.
The isotope number is (approximately) the atomic mass of the isotope, which is the sum of the number of protons and neutrons.
If you add neutrons, the atomic number (hence the element) does not change.

Also, in the future, please post in the chemistry section and post a link here or anywhere else you would like to.  This way, all responses will be in one place, the correct place.  In addition, this way, you will benefit from peer reviews from the chemistry helpers.