Which of the following statements concerning personal umbrel…

Questions

HOW MANY ELECTRONS DOES CESIUM(Cs) HAVE? Physics Test 1 Imаge 6.PNG

ACCORDING TO THE PERIODIC TABLE AN ISOTOPE IODINE 131, WILL DECAY INTO WHICH OTHER ELEMENT WITH THE SAME ATOMIC MASS NUMBER? Physics Test 1 Imаge 7.PNG

WHAT KEEPS ELECTRONS WITHIN THE SHELLS OF THEIR ATOMS?