GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A dozen
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Bohr’s number
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Buckley’s number
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Avogadro’s number
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Detailed explanation-1: -The number of molecules in a mole of a substance, approximately 6.0225 × 10 23. Also called Avogadro’s constant.
Detailed explanation-2: -It is named after the Italian scientist Amedeo Avogadro by Stanislao Cannizzaro, who explained this number four years after Avogadro’s death while at the Karlsruhe Congress in 1860. The numeric value of the Avogadro constant expressed in reciprocal moles, a dimensionless number, is called the Avogadro’s number.
Detailed explanation-3: -One mole of a substance is equal to 6.022 × 10²³ units of that substance (such as atoms, molecules, or ions). The number 6.022 × 10²³ is known as Avogadro’s number or Avogadro’s constant.
Detailed explanation-4: -A mole, abbreviated as mol, is a measurement of amount used by scientists. One mole is equal to 6.022x1023 units. A mole is an important unit because on the periodic table a mole of a substance is equal to its atomic mass in grams.
Detailed explanation-5: -Avogadro’s number is the number of units in one mole of a substance, or 6.02214076 × 1023. This number is also called the Avogadro constant.