movies. Movies such as‚ Gawin Sa Dilim‚ Init Sa Magdamag‚ Sabik Sa Halik and everyones favorite‚ the deliciously titled Patikim ng Pinya. Songs prolifirating in the airwaves such as Nilunok Ko Ang Lahat‚ Kahit Gaano Kalaki and Sing With Me now‚ Sya si Roger Jer Jer. Wow.....powerful imaginations indeed. Philippines is a country full of questions. You may not notice it but we are asking a lot of questions. It could have been inspired by Einstein who said that “The important thing is not to stop
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Chemistry: A Molecular Approach (Tro) Chapter 8 Periodic Properties of the Elements 1) Give the ground state electron configuration for Se. A) [Ar]4s23d104p4 B) [Ar]4s24d104p4 C) [Ar]4s23d104p6 D) [Ar]4s23d10 E) [Ar]3d104p4 Answer: A 2) Give the ground state electron configuration for I. A) [Kr]5s24d105p6 B) [Kr]5s24d105p5 C) [Kr]4d105p6 D) [Kr]5s25p6 E) [Kr]5s25d105p6 Answer: B 3) Give the ground state electron configuration for Sr. A) [Kr]5s24d2
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and then drops down to 1 when we start the new period with sodium. Within a group--starting with carbon and going down to silicon and germanium--the number of valence electrons stays the same. | | | | C 4 | N 5 | O 6 | F 7 | Ne 8 | Na 1 | | | Si 4 | | | | | | | | Ge 4 | | | | | | A quick way to determine the number of valence electrons for a representative element is to look at which group is it in. Elements in group Ia have 1 valence electron. Elements in group
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number | 0.79 | Lanthanum | La | 57 | - Symbol | 0.82 | Potassium | K | 19 | - Atomic Mass | 0.82 | Strontium | Sr | 38 | - Electro negativity | 0.89 | Cerium | Ce | 58 | - Density | 0.89 | Thorium | Th | 90 | - Melting point | 0.93 | Sodium | Na | 11 | - Boiling point | 0.95 | Yttrium | Y | 39 | - Vanderwaals radius | 0.98 | Lithium | Li | 3 | - Year of discovery | 1 | Potassium | K | 19 | - Inventor surname | 1.1 | Praseodymium | Pr | 59 | - Elements in earth crust | 1.1 | Protactinium
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My Grandfather always said to me “ s3 wo si as3 Ny3 wo d3 a 3h) na wo tafiri” –“Even if you don’t like the taste in your mouth that is where you will always lick” The diversity of life impinges on us to make a choice in every single decision. Whatever you have done in your life and whatever you will do is simple a bundle of choices you have made or will make. And every single one of these choices serves as a foundation for another choice. But the more fascinating thing about choices is that every
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EDS are show in Table 1. The results indicated that differences in the elements of banana kepok peel powder and cellulose. The banana kepok peel powder contained of C 21.94% while the cellulose increased 64.67%. Some of the elements such of O‚ Fe‚ Na‚ Al‚ Si‚ K‚ and Ca in banana kepok peel powder was decreased. Adsorption of Procion dye The effect of initial concentration of removal Procion dye onto banana kepok peel powder and cellulose were
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utility jeepney‚ I seldom hear these children of well-to-do families speaking these lines: “Where man ta mag-watch og movie?” or “Mommy‚ when man diay si Daddy mouli?” or “Mommy‚ ingon si teacher‚ bad baya ang mangaway og baby.” From those who are in exclusive colleges and universities‚ these lines are quite familiar: “Mag-faster ta oy kay hapit na baya ang time!” or “Pa-borrow og money‚ please. Mo-pay ko tomorrow” or “Nag-eat naka?” or “Mag-buy tag food.” What language is that? Certainly‚ it is
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1. The diagram below shows the electronic structure of boron. (a) The electrons are represented by arrows. What property of the electrons do these ‘up’ and ‘down’ arrows represent? ..................................................................................................................................... (1) (b) Suggest why electrons which occupy the 2p sub-levels have a higher energy than electrons in the 2s sub-level. .....................................................
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she was used to writing only “Condolence and sympathy” on the ribbon. But she talked so loud that the other vendors came over. “Santissima! Kay Ka Bel mo ba ibibigay?” a vendor of Lego-like toys asked. I nodded and smiled. “Diyos ko‚ Mare‚ huwag mo na singilin!” she told the flower vendor. “Kay Ka Bel
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(poor electrical/heat conductors) Bonding in solids: Ionic solids Ionic solid crystals (e.g. NaCl) are held together by the Coulomb attractive interaction between ions with opposite sign (ionic bonding) e2 b U = −αk + m r r (α = 1.7476 for Na +Cl − ) (m ~ 10) k = 1 / 4πε 0 Madelung constant Ionic cohesive energy: 11 U0 = min U (r ) = −αk 1 − m r0 mb r0 = αk 1 m −1 Bonding in solids: Ionic solids Properties of ionic solid crystals: • relatively
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