109 Questions and Answers on robertson chemistry jcjc
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Course
Robertson chemistry jcjc
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Robertson Chemistry Jcjc
1. Give the ground state electron configuration for Sr. - ️️[Kr]5s2
2. Give the ground state electron configurations for Se - ️️[Ar]4s23d104p4
3. Give the number of core elections for Cd. - ️️46
4. Give the possible values for (ml) for an 'd' orbital. - ️️-2,-1,0,1,2
5. Give the...
1. Give the ground state electron configuration for Sr. - ✔ ✔
[Kr]5s2
2. Give the ground state electron configurations for Se - ✔ ✔
[Ar]4s23d104p4
3. Give the number of core elections for Cd. - ✔ ✔ 46
4. Give the possible values for (ml) for an 'd' orbital. - ✔ ✔ -
2,-1,0,1,2
5. Give the possible values for (ml) for an 'f' orbital. - ✔ ✔ -
3,-2,-1,0,1,2,3
6. Give the possible values for (ml) for an 'p' orbital. - ✔ ✔ -
1,0,1
7. How many atoms are in 15.6 grams of silicon? - ✔ ✔ 3.34
x 1023
8. How many atoms are present in 4.5 moles? - ✔ ✔ 2.7 x
1024
9. How many different values of ml are possible in the 2p
sublevel? - ✔ ✔ 3
10. How many iron atoms are contained in 354 g of iron? -
✔ ✔ 3.82 x 1024 Fe atoms
11. Eugenol is the major component in oil of cloves. It has a
molar mass of 164.2 g/mol and is 73.14% C and 7.37% H;
the remainder is oxygen. What are the empirical and
molecular formulas of eugenol? - ✔ ✔ C5H6O,
C10H12O2
, 12. Give all possible values of ' l ' for a n=5 sublevel. - ✔
✔ 0,1,2,3,4
13. Give the ground state electron configuration for Br-. - ✔
✔ [Ar]4s23d104p6
14. Give the ground state electron configuration for Pb. - ✔
✔ [Xe]6s24f145d106p2
15. In general, atomic radii - ✔ ✔ increase down a group
and decrease across a period
16. Ionization energy increase down a group of the periodic
table. - ✔ ✔ Ionization energy increase down a group of
the periodic table.
17. Place the following in order of increasing atomic radius.
18. As O Br - ✔ ✔ O<Br<As
19. Predict the charge that an aluminum ion would have -
✔ ✔ 3+
20. Predict the charge that an ion formed from sodium
would have - ✔ ✔ +1
21. Six grams of carbon contains 3.007 x 1023 atoms. - ✔
✔ true
22. Substances like hydrogen (H2 ) and oxygen (O2) that
are composed of only one type of atom are classified as
______. - ✔ ✔ elements
23. The _______ of a photon is equal to the speed of light
divided by the wavelength of the photon. - ✔ ✔ frequency
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