19. Two particles X and Y have the following composition: X: 17 protons, 18 neutrons, 17 electrons Y: 17protons, 18 neutrons, 18 electrons What is the relationship between these particles? a Will these two particles have similar chemical properties? Explain why? the foll No D

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Chapter2: Chemical Formulas, Equations, And Reaction Yields
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Problem 18P: A gaseous binary compound has a vapor density that is 2.53 times that of nitrogen at 100°C and...
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ATOMIC STRUCTURE AND THE PERIODIC TABLE
In naturally occurring copper isotopes, Cu contributes 69.09% and
Cu, 30.91%. Calculate the relative atomic mass of copper. (Accurate
mass determined; Cu = 62.9298 m, Cu = 64.9278 m)
19. Two particles X and Y have the following composition:
X: 17 protons, 18 neutrons, 17 electrons
Y: 17protons, 18 neutrons, 18 electrons
What is the relationship between these particles?
a
Will these two particles have similar chemical properties? Explain why?
20. Arrange the following in order of increasing ionization energy: Li, Na, Ne, N, O
21. Explain the following:
The first ionization energy of beryllium is greater than that of boron.
a
mber.
The first ionization energy of oxygen is less than that of nitrogen.
The first ionization energy of lithium is greater than that of sodium.
22.
The electron configuration of a particular metal cation M3+ is [Ar] 3d?.
a Identify the corresponding metal.
Write the electron configuration of the metal atom.
wing
23. Arrange the following in order of increasing atomic radius Mg, Cs, Ca, Al, Ba.
24. Explain briefly, why potassium always occurs as a +1 ion in its compounds and
calcium as a +2 ion.
trons
25. Arrange the atoms (ions) in each of the following groups in order of increasing
size based on their location in the periodic table.
a Mg2+, O2, Na*, F¯, Al3+
b Ne, N3, F-, Na*, C4
с F, Be, С, В, Li
d Kt, S2, As3-, CF, Ca²+
26. Excited sodium atoms emit light with a wavelength of 589 nm. Calculate the:
frequency of the light, and
a
b energy of one of these photons in joules
Transcribed Image Text:ATOMIC STRUCTURE AND THE PERIODIC TABLE In naturally occurring copper isotopes, Cu contributes 69.09% and Cu, 30.91%. Calculate the relative atomic mass of copper. (Accurate mass determined; Cu = 62.9298 m, Cu = 64.9278 m) 19. Two particles X and Y have the following composition: X: 17 protons, 18 neutrons, 17 electrons Y: 17protons, 18 neutrons, 18 electrons What is the relationship between these particles? a Will these two particles have similar chemical properties? Explain why? 20. Arrange the following in order of increasing ionization energy: Li, Na, Ne, N, O 21. Explain the following: The first ionization energy of beryllium is greater than that of boron. a mber. The first ionization energy of oxygen is less than that of nitrogen. The first ionization energy of lithium is greater than that of sodium. 22. The electron configuration of a particular metal cation M3+ is [Ar] 3d?. a Identify the corresponding metal. Write the electron configuration of the metal atom. wing 23. Arrange the following in order of increasing atomic radius Mg, Cs, Ca, Al, Ba. 24. Explain briefly, why potassium always occurs as a +1 ion in its compounds and calcium as a +2 ion. trons 25. Arrange the atoms (ions) in each of the following groups in order of increasing size based on their location in the periodic table. a Mg2+, O2, Na*, F¯, Al3+ b Ne, N3, F-, Na*, C4 с F, Be, С, В, Li d Kt, S2, As3-, CF, Ca²+ 26. Excited sodium atoms emit light with a wavelength of 589 nm. Calculate the: frequency of the light, and a b energy of one of these photons in joules
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