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The circumference of a circle with a diameter of 13.4 meters is: 42.1 meters (diameter x Pi = circumference).
diameter = 220/pi meters
The radius of a circle is 1/2 of its diameter. If the diameter is 15 meters, then the radius is 7.5 meters.
The Sun's diameter is approximately 1,391,000,000 meters in length, which is over 100 times the approximate diameter of the Earth (12,756,200 meters).
The diameter, rounded to the nearest meter, is: 26 meters(25.7831008 meters).
100 million helium atoms, being the number (1.0E-2 m)/(100E-12 m).
The smallest atom is helium (nucleus and electrons) while francium is the largest. Helium: 28 picometer francium: 260 picometer
The nucleus of a Helium atom contains two protons and two neutrons, protons and neutrons are measured in Daltons, and a Helium atom is about 4 Daltons
Roughly 2.6 times 10^{-10} meters.
ATOM
Elements are not species. Helium is an element. Helium can be a single atom.
there are 2 protons in a helium atom there are 2 protons in a helium atom
The answer for a hydrogen atom would be about 100 meters across a proton is about 1/10,000 th of the diameter of a hydrogen atom.
Helium atom has 2 electrons.
Type your answer here... when helium atom removes a electron it forms a helium+ ion.(He+)
Yes, helium atom.
That is a nonsense question because there is no measurement unit for length which is 10 mn. The nearest candidate is nm (nanometre) but the diameter of an hydrogen atom is nowhere near 10 nm.