Which element has two shells, both of which are completely filled with electrons?​

Neon is the element who is having complete electrons in its both the shells

it's atomic mass is 10

in its first shell it has 2 electrons and in 2nd shell it has 8 electrons

it's valency is 0

Hope it helps

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.

shield volcanos are angry and get mad over the smallest things so much that there heads erupt   pahoehoe and a'a lava. a composite volcano is the poller opposite of a shield volcano. its   peaceful thing and knows how to control its emotions.