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What is the scale factor of the sun's diameter to an NBA basketball's diameter?
The Sun is about 1,390,000 kilometers in diameter. The NBA basketball is about 0.238506 meters in diamter. The scale factor is about 1,390,000,000 to 0.238506, or about 5,827,945,628 to 1 or about 5.8 billion to one.
Why does helium and hydrogen does not come in agroup of periodic table?
Helium has 2 valence electrons and hydrogen has 1 electron. So, they are placed in different groups.
What is the maximum number of electrons that can be placed in a Lewis dot diagram?
Eight, except for helium, which has a maximum of two.
Why is helium's position not justified in periodic table?
Helium has 2 valence electrons and it should theoretically be placed along with group 2 elements. But since helium has completely filled orbitals (as do the noble gases), it is placed along with the noble gases.
Why is helium on the right side instead of being next to helium?
Helium is placed on the right side of the periodic table because it belongs to the noble gases group. Noble gases have similar chemical properties, hence they are grouped together on the right side of the periodic table. Helium is placed next to neon instead of itself due to the periodic table's structure, which is based on increasing atomic number.
How many centimeters equal 1.25 meters?
125 of them, placed end-to-end, do.
What is the scale factor of the sun's diameter to an NBA basketball's diameter?
The Sun is about 1,390,000 kilometers in diameter. The NBA basketball is about 0.238506 meters in diamter. The scale factor is about 1,390,000,000 to 0.238506, or about 5,827,945,628 to 1 or about 5.8 billion to one.
What gas does helium falls in.?
Helium (He) is a noble (inert) gas placed in the group 18 of the Periodic Table.Helium falls in inert gas. It is stable and non-reactive.
Why is Helium placed on the far right of the periodic table?
it is a noble gas
Why does helium and hydrogen does not come in agroup of periodic table?
Helium has 2 valence electrons and hydrogen has 1 electron. So, they are placed in different groups.
How can you test for helium?
One common way to test for helium is to use a helium leak detector, which can detect very small amounts of helium gas. Helium can also be identified using a mass spectrometer, since it has a unique mass-to-charge ratio. Additionally, helium can be detected by its characteristic orange glow when placed in an electric field.
When the diameter of an aluminum aton is 250 picometers (pm). How many aluminum atoms must be placed end to end to make a chain 1 foot long?
The diameter of an aluminum atom is 250 picometers, which is 2.5 x 10^-10 meters. To make a chain 1 foot long (0.3048 meters), you would need 0.3048 / 2.5 x 10^-10 = 1.22 x 10^9 aluminum atoms placed end to end.
What is the maximum number of electrons that can be placed in a Lewis dot diagram?
Eight, except for helium, which has a maximum of two.
What is the symbol for He in the periodic table?
The name of the element with symbol 'He' is Helium. It has got 2 Protons and two neutrons in the nucleus and 2 electrons moving around it. It is first in the series of 'Nobel' gases. Others being Neon, Argon, Krypton,Xenon and Radon.
Why is helium's position not justified in periodic table?
Helium has 2 valence electrons and it should theoretically be placed along with group 2 elements. But since helium has completely filled orbitals (as do the noble gases), it is placed along with the noble gases.
Why is helium on the right side instead of being next to helium?
Helium is placed on the right side of the periodic table because it belongs to the noble gases group. Noble gases have similar chemical properties, hence they are grouped together on the right side of the periodic table. Helium is placed next to neon instead of itself due to the periodic table's structure, which is based on increasing atomic number.
Do two radii make a diameter?
Only if they are placed in such a way as to make a straight line ,i.e., they should be placed at 180 degrees to each other.
