Hilum
Helium has an atomic mass of 4.- Number of Protons/Electrons: 2- Number of Neutrons: 2Lithium has an atomic mass of 7.- Number of Protons/Electrons: 3- Number of Neutrons: 4Helium has TWO less neutrons than Lithium.
Deuterium is an isotope of Hydrogen. Helium is and entirely different element.
What are the differences between polycarbohydrate and polysaccharide?
they have different names
No. The difference between them is that helium atoms have electrons, and alpha particles don't.
micropyle
During the first stage of the life stage the butterfly has a micropyle. The micropyle is a funnel shaped opening located at the bottom of the egg.
Neon has 8 more protons and 8 more electrons than helium. It's heavier, but still lighter than air.
The micropyle opening allows the pollen tube to enter the ovule for fertilization. It absorbs water for germination. It provides for the diffusion of respiratory gases.
helium in a jar diff from helium atom
entry of micropyle is known as porogamy
micropyle
micropyle
The micropyle
Population I is younger and has more heavy elements. Population II is older and is almost entirely hydrogen and helium.
Today's blimps are not filled with flammable hydrogen gas like Hindenburg was, but normally the non-flammable helium.
yes