Using the periodic table entry below, match the phrases with their corresponding values. 1. number of protons 39 2. atomic mass 8
1. Curium 2. xenon 3.the element with valance electron 4 and 2 is Tin and lead 4. Nickel . if when n=3 , the number of electrons is 18 , then the total number of electrons will be 28 ; because there will be 2 electrons in n=1 and 8 electrons when n=2 using the […]