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What is the relationship between two elements X and Y whose atomic numbers are 18 and 20 respectively but their mass numbers remain same as 40?
Elements X and Y with atomic numbers 18 and 20, respectively, are argon (Ar) and calcium (Ca). Despite having the same mass number of 40, they are different elements because they have different numbers of protons in their nuclei; argon has 18 protons, while calcium has 20. The fact that their mass numbers are the same suggests they can exist as isotopes or in a specific isotopic form under certain conditions, but in this case, they are simply different elements with different properties.
Why is atomic number the proper basis for classification of elements?
Because Atomic number is the identity of an element , all the atoms of an element have the same atomic number while their mass numbers ma be different. for Example Argon(Ar) a noble gas and Calcium(Ca) an active metal have the same mass number 40.
What is the mass number atomic mass of the most common isotope of argon?
Argon is a non metal element. Mass number of it is 40.
What is the molar mass of Ar?
The molar mass of Ar (argon) is approximately 39.95 g/mol.
Calculate the ratio of effusion rates for Ar and Kr?
The ratio of effusion rates for two gases is given by the square root of the inverse ratio of their molar masses. The molar mass of Ar is approximately 40 g/mol, and for Kr it is approximately 84 g/mol. So, the ratio of effusion rates for Ar and Kr is √(84/40) ≈ 1.3.
What is the relationship between two elements X and Y whose atomic numbers are 18 and 20 respectively but their mass numbers remain same as 40?
Elements X and Y with atomic numbers 18 and 20, respectively, are argon (Ar) and calcium (Ca). Despite having the same mass number of 40, they are different elements because they have different numbers of protons in their nuclei; argon has 18 protons, while calcium has 20. The fact that their mass numbers are the same suggests they can exist as isotopes or in a specific isotopic form under certain conditions, but in this case, they are simply different elements with different properties.
Why is atomic number the proper basis for classification of elements?
Because Atomic number is the identity of an element , all the atoms of an element have the same atomic number while their mass numbers ma be different. for Example Argon(Ar) a noble gas and Calcium(Ca) an active metal have the same mass number 40.
What is the mass number atomic mass of the most common isotope of argon?
Argon is a non metal element. Mass number of it is 40.
How many moles are in 11.8g Ar?
The answer is 0,0719 mol.
What is the mass in grams of 3.2 moles of argon?
From the Periodic Table, Argon has an atomic weight of 39.948. One mole of any element is equal to its atomic weight in grams. So 1 mole of Ar = 39.948g of Ar. Using that equality, you do the following calculation to find the number of moles of Ar in 22g of Ar: 22g Ar X 1mol Ar/39.948g Ar = 0.55mol Ar
The rate of effusion of Argon was measured to be 0.218mols at a certain temperature Calculate the rate of effusion of helium gas (Molar mass of Ar=40,Molar mass of Helium =4)?
50000
What is the atomic of arogon?
Argon is a non metal element. Atomic Mass of it is 40.
What is the molar mass of Ar?
The molar mass of Ar (argon) is approximately 39.95 g/mol.
Can Ar-40 change back to K-40 talking about elements?
No, AR-40 cannot change back to K-40. Ar-40 is a stable isotope of Argon, while K-40 is a radioactive isotope of Potassium. Ar-40 is formed from the decay of K-40, but once it is formed, it will not transform back into K-40.
Calculate the ratio of effusion rates for Ar and Kr?
The ratio of effusion rates for two gases is given by the square root of the inverse ratio of their molar masses. The molar mass of Ar is approximately 40 g/mol, and for Kr it is approximately 84 g/mol. So, the ratio of effusion rates for Ar and Kr is √(84/40) ≈ 1.3.
What is the carbon and argon symbol?
Well, in science I am learning atoms. Element: Carbon ....... Symbol: C ...... Atomic Number: 6 ....... Atomic Mass: 12 Element: Argon ......... Symbol: Ar...... Atomic Number: 18 ..... Atomic Mass: 40
What is the molar mass of argon?
The molar mass of Ar = 39.948 g/mol
