I) Define atomic mass unit. ii) What is the numerical value of mole.

1.	I) Define atomic mass unit. ii) What is the numerical value of mole. iii) Name the elements present in oxide ionin short plz
Answer» ong>Answer: The dalton or unified atomic mass unit is a unit of mass widely used in physics and chemistry. It is defined as 1/12 of the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state and at rest. The atomic mass constant, denoted mᵤ is defined identically, giving mᵤ = m/12 = 1 Da. One mole contains exactly 6.022 140 76 X 1023 elementary entities. This number is the fixed numerical VALUE of the AVOGADRO constant, NA, when expressed in the unit mol–1 and is called the Avogadro number. An oxide (/ˈɒksaɪd/) is a CHEMICAL compound that contains at least one oxygen atom and one other element in its chemical formula. "Oxide" itself is the dianion of oxygen, an O2– (molecular) ion.

I) Define atomic mass unit. ii) What is the numerical value of mole. iii) Name the elements present in oxide ionin short plz

Answer»

ong>Answer:

The dalton or unified atomic mass unit is a unit of mass widely used in physics and chemistry. It is defined as 1/12 of the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state and at rest. The atomic mass constant, denoted mᵤ is defined identically, giving mᵤ = m/12 = 1 Da.

One mole contains exactly 6.022 140 76 X 1023 elementary entities. This number is the fixed numerical VALUE of the AVOGADRO constant, NA, when expressed in the unit mol–1 and is called the Avogadro number.

An oxide (/ˈɒksaɪd/) is a CHEMICAL compound that contains at least one oxygen atom and one other element in its chemical formula. "Oxide" itself is the dianion of oxygen, an O2– (molecular) ion.

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