2s2 Study guides, Class notes & Summaries

Organic Chemistry, 7e (Bruice) Chapter 1 Remembering General Chemistry: Electronic Structure and Bonding 1) Atoms with the same number of protons but different numbers of neutrons are called . Answer: isotopes Section: 1-1 2) Which of the following elements does this electronic configuration represent? 1s2 2s2 2p5 A) F B) C C) N D) Al E) O Answer: A Section: 1-2 3) How many unpaired electrons are present in the isolated carbon atom (atomic number = 6)? A) none B) one C) two D)...

A Level Physical Chemistry AQA questions and answers 100% verified. 1 - ANS.relative mass of a proton 1 - ANS.relative mass of a neutron 1/1840 - ANS.relative mass of an electron +1 - ANS.relative charge of a proton 0 - ANS.relative charge of a neutron -1 - ANS.Relative charge of an electron strong nuclear force - ANS.How is the nucleus held together nuclear force - ANS.is the nuclear force or electrostatic force stronge...

The positive charge of an atom is concentrated in a small region. Correct Answer-Which of the following is a correct interpretation of the results of Rutherford's experiments in which gold atoms were bombarded with alpha particles? 1s2(2s2)2p6(3s2)3p6(4s2) Correct Answer-What is the correct ground state electron configuration for Fe? Mg<Ca<Rb<Cs Correct Answer-Based on their positions in the periodic table, list the following atoms in order of increasing radius: Mg, Ca, Rb, Cs ...

Give the full electron configuration of an Al atom and a Cr3+ ion : 1s2 2s2 2p6 3s2 3p1 1s 2s2 2p6 3s2 3p6 3d6 Deduce the formula of the ion that has a charge 2+ with the same electron : Sr2+ Deduce the formula of the compound that contains 2+ ions and 3- ions that both have the same electron configuration as argon : CaP Deduce which of Na+ and Mg2+ is the smaller ion 2 marks : Mg 2+ 2 Both have the same number of shielding however Mg2+ has more protons so higher nuclear charge and...

Question 1 . Write the subshell electron configuration (i.e.1s2 2s2, etc.) for the Fe26 atom. Fe26 = 26 electrons = 1s2 2s2 2p6 3s2 3p6 4s2 3d6 Question 2 Write the subshell electron configuration (i.e.1s2 2s2, etc.) for the S16 atom. S16 = 16 electrons = 1s2 2s2 2p6 3s2 3p

Long Hand Electron Configuration Write out the entire electron configuration for the following elements: 1. Helium 1s2 2. Phosphorus 1s2 2s2 2p6 3s2 3p3 3. Nickel 1s2 2s2 2p6 3s2 3p6 4s2 3d8 4. Xenon 1s2 2s2 2p6 3s2 3p6 4s2 3d12 4p6 5s2 4d12 4p2 5. Neodymium 1s2 2s2 2p6 3s2 3p6 4s2 3d12 4p6 5s2 4d12 4p6 5s2 6. Gold 1s2 2s2 2p6 3s2 3p6 4s2 3d12 4p6 5s2 4d12 4p6 5s2 4d125p6 6s1 7. Potassium 1s2 2s2 2p6 3s2 3p6 4s1 8. Carbon 1s2 2s2...

AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry questions and answers verified What is the equation linking mass moles and MR? Mass=moles * MR What is the definition of Ar (relative atomic mass)? The average mass of an atom of an element compared to the mass of one twelfth of carbon 12. What does Mr stand for? Relative molecular mass Define relative isotopic mass. The mass of an isotope of an element compared to the mass of one twelfth of the mass of carbon 12 ...

AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry questions and answers verified What is the equation linking mass moles and MR? Mass=moles * MR What is the definition of Ar (relative atomic mass)? The average mass of an atom of an element compared to the mass of one twelfth of carbon 12. What does Mr stand for? Relative molecular mass Define relative isotopic mass. The mass of an isotope of an element compared to the mass of one twelfth of the mass of carbon 12 ...

s block : The block that belongs to hydrogen and groups 1 and 2 Elements that have their highest energy e- in s-orbitals E.G. Na 1s1 2s2 2p6 3s1 p : The block that belongs to the non-metals and metalloids Elements that have their highest energy e- in p-orbitals E.G. C 1s1 2s2 2p2 d : Transition metals and b-block are not exactly the same (Scandium and Zinc are not transition metals) Elements that have their highest energy e- in d-orbitals 1s1 2s2 2p6 3s2 3p6 4s2 3d6 2 f : The blo...

Organic Chemistry, 7e (Bruice) Chapter 1 Remembering General Chemistry: Electronic Structure and Bonding 1) Atoms with the same number of protons but different numbers of neutrons are called . Answer: isotopes Section: 1-1 2) Which of the following elements does this electronic configuration represent? 1s2 2s2 2p5 A) F B) C C) N D) Al E) O Answer: A Section: 1-2 3) How many unpaired electrons are present in the isolated carbon atom (atomic number = 6)? A) none B) one C) two D)...