How many electrons are in the outer shell of each of the following atoms?

(1) Identify the chiral atoms, if any, with an asterisk (*) in the following compounds. HO Н CH OH Н ОН H Н ОН Н ОН Н HO CH OH Н ОН Н Н ОН Н ОН

How many oxygen atoms are in this molecular formula? 3H2 O

Arrange in order of increasing nonmetallic character  (a) the period 3 elements Na, Cl, & Mg  (b) the Group 7A elements At, F, & I

What event is common to ALL signal transduction pathways?     A)  Calcium ions bind to/ activate proteins.     B)  Cyclic nucleotides are formed.     C)  Proteins change in shape.     D)  Phosphates are transferred between molecules.     E)  Protons are transferred between molecules.

What characteristic must a compound have to experience the following intermolecular forces?

Iodine has 37 known isotopes.  Therefore, the atomic mass has a range of 108-144 amu. Which of the following statements concerning iodine is correct? A) The isotopes of iodine have between 55 and 91 protons. B) An atom of iodine can have between 55 and 91 neutrons. C) The isotopes of iodine will always have the same number of neutrons, but the protons can vary. D) The isotopes of iodine have between 108 and 144 neutrons, but the number of protons will not vary.

Atoms A and B interact to form a compound, AB2. When measured, atom A has a partial negative charge and atom B has a partial positive charge. From this information, we can conclude what? Select only ONE answer choice. Note: - means "approximately equal to" , A > B means "A is greater than B" , and A B: AB2 is hydrophilic Not enough information to answer the question

. Give the name of and symbol for an element with this number of valence electrons.a) 2b) 6c) 8

How many protons, electrons, and neutrons are present in the following ? Magnesium cation (Mg2+), Chloride anion (Cl-),  Carbon -14(14C), and Tritium (3H)?