Common side effects of Keflex include: diarrhea, dizziness, tiredness, headache, stomach upset, abdominal pain, joint pain, vaginal itching or discharge, nausea/vomiting, itching/swelling, and rash.Keflex dosage depends on the condition being treated.eflex is found in breast milk and should be used with caution in breastfeeding women. Our Keflex (cephalexin) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication. This is not a complete list of side effects and others may occur.
The central atom of a methane molecule is the carbon atom. Four hydrogen atoms are directly bonded to it and there is no lone pairs located in the central atom. Having a tetrahedral shape, every bond angle in methane is equal to 109.5 degrees. Was this answer useful?
A molecule is two or more atoms linked by a chemical bond. Molecules can contain different types of bonds. If atoms are sharing electrons, then the bond between them is covalent. If an atom gives up an electron to another atom, then they have an ionic bond.Methane has four covalent bonds between carbon (C) and hydrogen (H). Chemical reactivity of molecules-tendency to break and form chemical bonds. 2  Biology of molecules-size and shape of molecules, and the nature of weak interactions with other molecules.