<u>Answer</u>:-
Name of element = Lead
Symbol ♾ of Lead = Pb
Atomic no. = 82
Atomic mass = 207.2 amu
No. of protons = 82
No. of electrons = 82
Yes, lead(Pb) is a metallic element and certainly it has 6 electron shells which means 6 energy level.
If you find anything unclear you can ask me...
Answer:
I agree
Explanation:
For scientists working in classified areas, collaboration with university programs and researchers provides opportunities to expand and strengthen their science through the conduct of peer-reviewed, open literature research.
There are 2 significant figures in this number. A significant figure is any number that isn’t 0. Hope this helps.
I think A. o2 is oxygen, h202 is a clear liquid like bleach, And H20 is water lol :P
