For each atom in the table below, write down the subshell from which an electron would have to be removed to make a +1 cation, and the subshell to which an electron would have to be added to make a -1 anion. The first row has been completed for you. atom H Cd Pb Be subshell from which electron removed to form +1 cation 1s 0 0 subshell to which electron added to form -1 anion X 1s 0 S

The addition of one or more electrons to a neutral atom results in a O positively-charged cation negatively-charged anion O negatively-charged cation O positively -charged anion DE

Fill in the table below by providing how many protons, and how many electrons in each atom/ion below.   # of protons # of electrons # of neutrons in the most common isotope (just FYI) H     0 H+     0 C     6 C+     6 C-     6 O     8 O+     8 O-     8 N     7 N+     7 N-     7 S+     16 P-     16 Cl     18 Br‑     45

A monatomic ion with a charge of -2 has an electronic configuration of 1s22s22p63s23p64s23d104p65s24d105p6.This ion is a(n) _______cation anion.What is the chemical symbol of the noble gas this ion is isoelectronic with? Xe.What is the formula of the ion? Ba2+.

The charge on an atom that has 15 protons and 18 electrons -3 -18 +15 +3

How many of the indicated atoms are represented by each chemical formula? Part A carbon atoms in C₂H5COOCH3 Express your answer as an integer. {—| ΑΣΦ Submit Part B Request Answer oxygen atoms in Ca(ClO3)2 Express your answer as an integer. V—| ΑΣΦ 4 ? ?

Which of the following answer choices explains how Lewis-Dot structures are used in Chemistry? O Lewis-Dot Structures are used to illustrate the valence electrons of an atom. Valence electrons are represented as dots around the element symbol of the atom. O Lewis-Dot Structures are used to illustrate the core electrons of an atom. Core electrons are represented as dots around the element symbol of the atom. O Lewis-Dot Structures are used to illustrate the protons of an atom. Protons are represented as dots around the element symbol of the atom. O Lewis-Dot Structures are used to illustrate the neutrons of an isotope. Neutrons are represented as dots around the element symbol of the atom.

Determine the number of valence electrons for each of the following atoms. Enter each answer as a numeral. For example, if an atom has two valence electrons, enter the numeral 2. а) Вe b) Al с) О d) Ar

What would happen if a proton were to be removed from a 26Mg atom? A positively charged ion of magnesium will be formed. O The identity of the atom will be changed altogether, in this case to sodium (Na). A different isotope of magnesium will be formed (25Mg). A negatively charged ion of magnesium will be formed.

Complete the table below.