Se: Selenium
Protons: 34
Electrons: All atoms in the periodic table are neutral until changed otherwise
Neutrons: 44
Atomic Mass: 78.09
>Symbol attached<
Explanation:
13 are the number of atoms
Answer:
Just ask google for help
Explanation:
I always do it and get it right
Answer:
8 to 8.5 since that is the recommended and people usualy sleep more than that
The electronic configuration of the elements which share the group, must have the last electron in same block..