Answer Happy

Based on the Aufbau Principle, which of the following statements is correct? A. the 5d orbitals fill before the 6s orbital B. the 4s orbitals fill before the 3d orbital C. the 4f orbitals fill before the 5p orbital D. the 3d orbitals fill before the 3p orbitals
Sometimes a reaction can fall in more than one category. Into what category (or categories) does the reaction of Ba(OH)2(aq) + H3PO4(aq) fit? A. Oxidation-reduction B. Precipitation C. acid-base and precipitation D. acid-base and oxidation-reduction
Which of the following atoms has the largest number of unpaired electrons? (Clue: draw orbital diagram then you will see which has unpaired electrons) O A. Cr3+ OB. CO3- C. Cu2+ OD. Ni2+
What is the general goal of the Lewis dot structure? A. To determine the electron position OB. To find the atomic mass of an element OC. To show the element's bonding capabilities and its valence electrons D. To search for the number of electrons in an individual atom