Science
How many electrons are in a neutral helium atom?
2
Background
A neutral helium atom has two electrons. They orbit a core made of two protons and two neutrons. Helium is the second lightest element in the universe. Because it is so light, helium balloons float upward.
More Science questions
How many hearts does an octopus have?
See questionWhere is the driest place on Earth?
See questionWhat percentage of Earth has never been mapped by humans?
See questionHow many kilometers does light travel in one second?
See questionHow many kilometers tall is the tallest known mountain in the Solar System?
See questionHow many liters of air does an adult breathe in on a calm day?
See question