What type of element is lead? In other words, what is it classified as on the periodic table?LeadLead is a poisonous substance and it harms the brain and nervous system. It is used in car batteries and in radiation protection. Lead is also used for storing c...
What is tin on the periodic table?Periodic table:There are 118 known elements that are organized on the periodic table. The periodic table was developed by a Russian scientist named Dmitri Mendeleev. The elements are organized by the number of protons in their nucleus, called the atomic number...
The periodic table of the elements is a representation of all known elements in an orderly array. The periodic law presented by Dmitri Mendeleev in 1869 stated that if the (known) elements are arranged by atomic weight, then certain trends in chemical properties can be observed. That is to s...
Periodicityis one of the most fundamental aspects of theperiodic tableof the elements. Here is an explanation of what periodicity is and a look at the periodic properties. What Is Periodicity? Periodicity refers to the recurring trends that are seen in the element properties. These trends became ...
First Element of the Periodic Table: The periodic table is a table in which the chemical elements are arranged by atomic number. It starts with the element with the lowest atomic number all the way to the element with the highest atomic number, Oganesson. ...
Although it has been suggested that the notion of element as basic substance should be considered in terms of fundamental particles like protons and electrons, I resist this move and conclude that the quantum mechanical tradition has not had much impact on the question of what is an element ...
百度试题 结果1 题目What is a row of elements on the periodic table called? A. octave B. period C. group D. transition 相关知识点: 试题来源: 解析 B 反馈 收藏
Elements are numbered from left to right in order of how many protons their atoms contain. Hydrogen is the first element in the Periodic Table, as its atom contains one proton. Metals are on the left of the table, metalloids are in the middle, and nonmetals are on the right. ...
1. What is the name for the horizontal rows of the periodic table?B A. groups B. periods C. families D. sets 相关知识点: 试题来源: 解析B1. B: The horizontal rows of the periodic table are called periods. The vertical columns of the periodic table are known as groups or families. ...
What is the fourth element on the periodic table? Which of the first 20 elements in the periodic table are metal and which are non-metals? What is the periodic table? What does the element symbol on the periodic table indicate? What is the element AR classified as in the periodic table?