30 Answered Questions for the topic Elements
I really don't understand what this is asking... please help. 1.) As you move left to right across the period, there are two elements that instead show a decrease in ionization energy. Identify... more
To which group in the periodic table does element M belong?
A certain element M is a main group metal that reacts with chlorine to give a compound with the chemical formula MCl2 and oxygen to give the compound MO. To which group in the periodic table does... more
Some chemistry questions about elements, and compounds
Hello, I humbly appreciate if you will answer these ff. questions. 1. Can you tell whether a substance is an element or a compound based on its physical appearance? 2. Knowing that an element... more
Using Clues to Identify Elements
Elements 2, 5, 18, 29, and 33 are colorless, odorless, unreactive gases. Of these gases, element 29 has the largest atomic mass.Elements 13, 19, 23, and 34 have six valence electrons, and element... more