How do you tell how many valence electrons there are in an element by looking at the periodic table?Answer and Explanation: The atoms in Group 1 on the periodic table have one valence electron. The atoms in Group 2 have two valence electrons. The atoms in...
What monatomic ions do barium (Z - 56) and selenium (Z - 34) form? An atom with an atomic number of 35 makes an ion with a negative 1 charge. How many electrons does this ion have? Which atom is this? What ion does Te form w...
Ions | Formation, Types & Charge from Chapter 5 / Lesson 2 379K How are ions formed? Learn about ion formation. Understand how do cations form, when ions are formed, how does an atom becomes anion, and do cations gain or lose electrons. Related...
The common characteristic of these gases is that they all have eight electrons around their outermost shell or valence shell. This observation led to the other observation that elements lose or gain electrons to have eight electrons in their valence shell which is known as the rule of eight...
Chemical Reactions in Everyday Life | Overview & Examples from Chapter 13 / Lesson 3 112K Learn about chemical reactions in everyday life. Understand there are many chemical reactions in everyday life and discover some examples of chemical changes. Rel...
How many electrons are in the highest occupied energy level of barium? If a silicon atom has four valence electrons, what is the maximum number of bonds it can form? What is the relationship between atomic structure and the organization of the periodic table?