mass number = protons + neutrons. Name the first 20 elements. The first 20 elements of the periodic table are as follows: H – Hydrogen, He – Helium, Li – Lithium, Be – Beryllium ...

The proposed names and symbols were announced back in June and were approved on Nov. 28 after a five-month public review. The elements complete the seventh row of the Periodic Table. The ...

The following names and symbols are officially assigned ... For now, we can all cherish our periodic table completed down to the seventh row." "The names of the new elements reflect the realities ...

So what gives? How did these elements get symbols with letters that don't even appear in their names? One answer lies in the cosmopolitan nature of the periodic table. Chemists in Europe ...

In this periodic table of elements quiz, you have 10 minutes to name as many elements as you can, given only their symbol, ...

Until now, these elements had temporary names and symbols on the periodic table as their existence was hard to prove. Because they decay extremely quickly, scientists found it difficult to ...

It's time to update your copy of the periodic table. Four new elements discovered ... Chemistry has announced these proposed names: Nihonium and symbol Nh, for the element 113 Moscovium and ...