Question

The aro 15 d Principle Quantum Number The 3' Quantumis called the Co Electron con Pigaration b. Electron mapping A. Electron togging 16. Using the 4 Quantum Numbers you can write the location of every electron in an atom. This is called it's a Electron tagging b. Electron mapping c. Electron configuration d Electron typing 17. Elements are placed in columns on the Periodic Table because a They have the same number of protons b. They have the same number of electrons c. They have the same number of neutrons d. They have the same chemical properties 18. Going across rows 4 and 5 on the Periodic Table the order of orbitals being filled is ap, ds b.s, d, p cd, f.p dfps 19. One family of elements have a stable electron structure and is called the a Alkali metals b. Halogens Noble gases d. Alkaline earth metals 20. Which of the following is not a step in the scientific method? a Stating a theory b. Doing research Experimenting and collecting data d Drawing conclusions. Write the electron configuration for the following elements. DO NOT USE THE SHORTCUT METHOD, SHOW ALL ELECTRONS. Ni- Po- Given: "Co - This atom has neutrons, an atomic number of protons, electrons, and a mass number of 21. For a and for b below. place an X by the element that has the largest radius. a Mg or Be b . Na or Si

Answer 1

167 using using the 4 cuentan numbers we can write the rocation of every electron in the atom. This is called it's - Electron configuration. Because, from electronic contique figure it out whether it is located by their n, m, & and s values. no Principle quanto um no. m magnetic n no its value (1-1) & Arimathal quantum no. (ny) Gaw S + 1/2 | Elements are placed in coloumno on the Table :- Periodic dy because they have same no. of electrons in the outermost orbitals. And as a result of on this, they shows same chemical Properties, Going across of electrons rows a Periodic table the order of orbitals is :- 7 ayp, ds lal one family of elements having a stable electrons stueture and it is called the cx Nobel gases (at has fulfilled electronic config.) 207 as stating theory is not a scientific metnod.

Electronie configuration: Ni 15 ² 25 286 35% 3p6 4 5² 328 To 12 25 206 35² 3p6 370 45 406 Ad 20 5 5 pe af to do 66²694 Given 2760 Mass nor 259 1 1 Atomic no. = 22! The atom has . Number of Protons a Number of Atom os O Atomic number So, Atomic number aat So, no. of Protons a27 Again, no. of Protons 2 no. of electrons So, no. of electrons >27 Again, Mass no. = No. of Protons & No, of * 59 = 27* No. of neutron ay No of neutrona 59-27 neutron 232 24) Atomic radies to lown a group ad orbital is added Nã corsi If we go from left to a right the one electron is Tadd to the outer most orbital and force of attraction increases by tand a charge sosire decreases, sona hans higher rains, One additional orbital isson So, radius of ng is higher.