Dmitri Mendeleev developed a chart-like arrangement of the elements called the . He stated that if the elements were listed in order of increasing , their properties repeated in a regular manner. He called this the of the elements. The arrangement used today differs from that of Mendeleev in that the elements are arranged in order of increasing . Each horizontal row of elements is called a(n) . Each vertical column is called a(n) , or , because of the resemblance between elements in the same column, a(n) .

Explanation:

Dmitri Mendeleev developed a chart-like arrangement of the elements called the Periodic Table . He stated that if the elements were listed in order of increasing atomic mass, their properties repeated in a regular manner. He called this the periodicity of properties of the elements. The arrangement used today differs from that of Mendeleev in that the elements are arranged in order of increasing atomic number. Each horizontal row of elements is called a(n)period . Each vertical column is called a(n) column, or , because of the resemblance between elements in the same column, a(n) __group.

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.

bcde is the incorrect answer it is a