1.As with any grid, the periodic table has (left to right) and (up and down). 2.Every row is called a .
3.All the elements in the same period have the same number of .
Each column is called a .
4.The elements in each group have the number of electrons in the outer orbital (or valence electrons).
5.Noble gases and helium are considered “happy” because their shell is .

this was not a multiple-choice its about the periodic table

4.similar properties

5.electrons are very reactive

introduction of a drug directly into the respiratory tract is a form of inhalation administration.

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.