Question

The atomic weight of yttrium ( Y ) is based on its only naturally occurring isotope, which has an atomic mass of 88.90585000000 u. (a) Write the complete atomic symbol for yttrium . How many protons, neutrons, and electrons are there in a Y atom? protons neutrons electrons (b) Using the masses of the fundamental partices, estimate the mass of a yttrium atom in atomic mass units by adding the masses of the particles that it contains. u particle proton neutron electron mass (u) 1.007276 1.008665 5.485799E-4 (c) Which of the two masses is larger?

          The atomic weight of yttrium ( Y ) is based on its only naturally occurring isotope, which has an atomic mass of 88.90585000000 u.

(a) Write the complete atomic symbol for yttrium .

How many protons, neutrons, and electrons are there in a Y atom?
protons
neutrons
electrons

(b) Using the masses of the fundamental partices, estimate the mass of a yttrium atom in atomic mass units by adding the masses of the particles that it contains. u

particle proton neutron electron
mass (u) 1.007276 1.008665 5.485799E-4

(c) Which of the two masses is larger?

The atomic weight of yttrium ( Y ) is based on its only naturally occurring isotope, which has an atomic mass of 88.90585000000 u.

(a) Write the complete atomic symbol for yttrium .

How many protons, neutrons, and electrons are there in a Y atom?
protons
neutrons
electrons

(b) Using the masses of the fundamental partices, estimate the mass of a yttrium atom in atomic mass units by adding the masses of the particles that it contains. u

particle proton neutron electron
mass (u) 1.007276 1.008665 5.485799E-4

(c) Which of the two masses is larger?

Added by Matthew F.

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