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 108s (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. N2H4 d. Al2(SO4)3 _ 10. Predict the formula for the following: (2 marks) a. Cat and H2PO4 b. Bat? and PO_

Hello, Can you help with those questions, please

Answer 1

thank you very  much
DATE DUIT main Group Element (a) Group - 1 Alkali Metals (b.) Group - 2 Alkaline Earth metal ( Group 13 Boron Group (d) Group - 14 Carbon Group (e-) Group 15 Nihogen family (f Group 16 Chalcogens. ( Group 17 Halogens (2) Group 18 Noble gas these all Group is called main Group Element 6. let d = c Speed of light - ut frequency 7 = 3x10 m/s 1:031 x 100 mm sol = 2.90m Electronic Configuration of Al (130) 152, 25², 286, 352, 3pt one orbital have = two electron Nine orbital have = ax = 10e- a so

TH BEN 9 DATE SO2 Caf Na Hu DATE UDI Covalent Bond a ry lonic Bond Covalent Bond - Al₂(SO4)3 - Cionic Bond) Covalent Bond ionic Bond Between metal and Non metal Between Non metal only Thank you very much .