The repeating periodicity of the blocks of 2, 6, 10, and 14 elements within sections of the periodic table arises naturally from the total number of electrons that occupy a complete set of s, p, d and f atomic orbitals, respectively, although for higher values of the quantum number n, particularly when the atom in question bears a positive charge, the energies of certain sub-shells become very similar and so the order in which they are said to be populated by electrons (e.g. Cr ...
Bursitis (sore toes) A bursa is a small fluid-filled sac located near a joint, bone or tendon which protects the area from friction. Bursitis is an inflammation of the bursa, and commonly occurs in the little toe. If your toe feels 'squidgy' and is causing you pain, bursitis may be the cause.
There are many causes for lumps and bumps on the bottom of the foot. They can occur in the toes, ball of the foot, arch and the heel. Lumps and bumps on the bottom of the foot can be bone, soft tissue lumps or even skin lesions. Lumps and Bumps Caused by Bone Problems. Bones can become enlarged or they may be out of place and cause lumps and bumps on the bottom of the foot.