Answer:
Periods on the periodic table of elements
Explanation:
In the periodic table of elements, there are seven horizontal rows of elements called periods. The vertical columns of elements are called groups, or families. (See also The Periodic Table: Metals, Nonmetals, and Metalloids.) In each period (horizontal row), the atomic numbers increase from left to right.
Chemical property because heat is not electrical.
Answer:
B
Explanation: electricity can not go throughout a open current
the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei.
The most common types of radiation are alpha particles, beta particles, and gamma rays