Periodic group

What are group one elements? Group one elements are alkali metals. The physical properties of group one elements are that they are shiny and the alkali metals are very soft. Lithium is the hardest alkali metal and they become softer as you go down the group. The chemical properties of group one is that they’re very reactive when mixed with water or when in contact with the air. Each element in group one has one electron in their outermost shell. Also, group one elements get more reactive as you…

Mendeleev conjures up the sole image of a periodic table, secure and immutable with all its ordered numbers and letters marching along in dependable patterns. More than one hundred years ago in Imperial Russia, the name Dmitri Mendeleev would call to mind séance scandals, economic tariffs, hot air balloon rides, a nationwide push for the metric system, bigotry charges, and student protests. This was the Mendeleev that Russia knew and (mostly) loved. The periodic table was just a particularly…

Our prior knowledge and mindset can define the way we approach new knowledge and experiences; we see what we believe, each letting our schemas have an affect on the conclusions that we draw from situations. Our perception of what occurs and the way we go about our motives are based off of a previous inclination or concept towards the situation we are preparing to encounter. This schema is useful in helping us organize and interpret information based off of our previous experiences or lessons,…

Introduction For the most part, the periodic table groups atoms together which are similar in structure and property. Groups or columns share similar electronic configurations, on which a variety of properties are based1. In the lab, the tested elements include those from Group 1, Group 2, Period 3, Period 4, Period 5, Period 6, and a series of metals (Calcium, Copper, Iron, Magnesium, Tin, Zinc). Group 1 elements have one valence electron and are extremely reactive. Most of the time, compounds…

Pure Elements From Group 1 & 7 Group 1 elements are alkali metals which are very soft and reacts with metals well. The elements reacts very strongly with water. As you down the elements of group one, the reactivity increases. However, group 7 are halogens which are reactive, but they are metal. They are also different from group one as their reactivity decreases as you go down. Also, the elements becomes darker as you go down the group. Chemical reactions of group 1: The group 1 alkali…

is 17. Chlorine has the physical form of a diatomic greenish-yellow gas at room temperature and atmospheric pressure. 1. 2. Indeed, its name is derived from the Greek word ‘chloros’, meaning ‘yellow-green’. 3. In the Periodic Table of Elements, Chlorine is found in the P-block, in group 17 and period 3. Chlorine is a non-metal, the second-lightest of the halogen family, which consists of salt-forming elements. 1. 2. Chlorine is 2.5 times as heavy as air. It has a pungent, suffocating odor and it…

elements. This could have been due to using a graduated cylinder to measure volume because it causes variability when determining decimal places. Even without a correct density, we determined the Group 1 element, labeled A2, to be sodium based on its high reactivity in water and its appearance. We determined the Group 2…

Periodicity is a term used to describe the trends of the periodic table pertaining to the element’s properties. One of these trends is known as atomic radius. Atomic radius is the term referring to one half the distance between the nuclei in a diatomic molecule. This atom’s size depends on the size of the electron cloud surrounding the inner nucleus. As one moves across a period, the atomic radius is smaller. In other words, when one moves across the periodic table from left to right, the atomic…

Theq element on the Periodic table that is best representation of my personality would be element 13, Aluminum. Properties of Aluminum its included high melting point, conductivity, malleability, and non-toxicity. Aluminum’s high melting point represents my determined personality. This is because I can face adversity well. Even when situations occur that are extremely unfavorable I am able to keep a cool head and think straight. I can persevere and stay strong allowing myself to solve and get…

six postulates about the chemical behaviors of an atom. The first postulate is that an atom has an essential kernel that does not change in chemical reactions and “possesses an excess of positive charges corresponding to the ordinal number of the group” in which the…