1. Right-click Suggested Contacts and choose Properties. 2. Click the Outlook Address Book tab. 3. Clear the checkbox for âShow this folder as an e-mail Address Bookâ. If the Suggested Contacts group doesnât disappear from your iPhone, go into Settings and turn off contact syncing, then turn it back on again.
Sulfur has 16 protons, 16 neutrons and 16 electrons. Its atomic number is 16, and it has an atomic mass of 32.066 amu. Sulfur is a pale, yellow, non-metallic...
What if there are more neutrons than the generalized ones? They are called isotopes. For example, a hydrogen atom has one proton and one electron (no neutrons). One isotope of hydrogen called deutorium has one proton , one electron and one neutron. Another isotope of hydrogen called tritium has one proton, two neutrons and one electron. Tritium is radioactive.