h = 6.626 times 10^-34 J middot g How many protons, neutrons, and electrons are
ID: 483335 • Letter: H
Question
h = 6.626 times 10^-34 J middot g How many protons, neutrons, and electrons are there in:^226Ra^2+^31P^3- How many unpaired electrons docs Mn^3+ have? Give electron configurations for the following species and classify paramagnetic or diamagnetic. As Ag^+ Lu What kind of metal is Ra? A microwave photon has a frequency of 3.15 times 10^10 Hz. What is its wavelength in cm? What is the energy of I mole of photons with this frequency? (in kJ) What species is represented by the following information ? P^+ = 39 n degree = 50 e- = 36Explanation / Answer
1]
226Ra2+
Number of proton =88
Number of Neutron = 138
Number of Electron = 86
33p3-
Number of proton =15
Number of Neutron = 16
Number of Electron = 18
2]
How many unpaired electrons does Mn3+ have?
There are 4 unpaired electron present in Mn3+
Mn3+ = [Ar] 3d4
3]
Electronic configuration of
As= [Ar] 3d10 4s2 4p3
Ag+ = 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 or [Kr]4d10
Lu = Xe 4f14 5d1 6s2
4]
What kind of metal is Ra?
It is alkaline earth metal. It is radioactive.
6]
89Y-3 has
Number of proton =39
Number of Neutron = 50
Number of Electron = 36
Y-89 has an atomic number of 39, and therefore 39 protons. The mass number, which is the sum of the neutrons and protons, is 89. Therefore, it has 50 neutrons. Since it has a +3 charge, it must have only 36 electrons (39 protons + 36 electrons = +3)
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