Answer:
248 miles
Explanation:
At an average altitude of 248 miles (400 kilometers) above Earth, the space station is the third brightest object in the sky.
Explanation:
Electrons are closer to the nucleus are in filled orbitals and are called core electrons. More energy which in nucleus called nuclear strOng energy to remove electron thars why its also a way harder too..
Atomic mass=no of neutron+no of electron
Atomic mass=25+30
Atomic mass=55
Answer:
B
Explanation:
idk how to explain, B is the definition of conduction