Question

5. Where are the main group elements found on the periodic table (1 mark) 6. An FM radio station found at 103.1 in the FM dial broadcasts at a frequency of 1.031 x 10 s'(103.1 MHz). What is the wavelength of these radio waves in meters. (2 marks) 7. Using complete subshell notation 1s 2s2 etc, predict the electronic configuration of: (1 marks) a. Al The third energy level has a maximum of nine (9) orbitals, therefore how many electrons can be found in the third energy level? (1 mark) 9. Predict if the following compounds are ionic or covalent (2 marks) a. SO2 b. CaF2 c. NzH4 d. Al2(SO4)3 10. Predict the formula for the following: (2 marks) a. Cat and H2PO4 b. Bata and PO43

can you help with those Qs

Answer 1

5.ANS-main group element found in the following group

a.Group 1 (Alkali Metals)

b.Group 2 (Alkaline Earth Metals)

c.Group 13 (Boron Group)

d.Group 14 (Carbon Group)

e.Group 15 (Nitrogen Group)

f.Group 16 (Chalcogens)

g.Group 17 (Halogens)

h.Group 18 (Noble Gases)
9 DATE DO 10:ca) Çay Hp Pow Cacuypowº Ba x bou - BecPay 6. Given frequency = 1.031x10@5-! wavelength - Speed of light a = 3x100 mis equency 1.031 x lods-l = 9.90m 7. AI totul e = 13 15² 25², 206, 35², 3p? d. we know that One orbital occupy = 20 1 Now Nine orbital have = 2x9 = 10e- G. SO2 - Covalent Nonmetal-metal metal Cafe - lonic jonie non N₂ny - Covalent Non metal Al₂ (504), lonic Non metal Covalent metal - mehel non metal
thank you very much