Periodic Table

"LGB" in gold typically stands for "London Good Delivery Bar," which is a commonly traded gold bar that meets certain quality standards for trading on the London bullion market.

The elements that form diatomic molecules are hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, iodine, and astatine. The chemical formula for each diatomic molecule is H2, N2, O2, F2, Cl2, Br2, I2, and At2.

The elements in the Periodic Table are arranged so that elements in the same group (column) will exhibit certain similar characteristics with others in that same group, but different periods (rows). So you can predict, with a certain degree of confidence, how a certain element may behave by where it is located on the periodic table, based on what you know about how other elements in the same group behave. This is mainly due to the valence electrons (the outermost electrons) being the same configuration as others in the same group. The valence electrons are a big determining factor as how that element will react with other elements.

They do not all behave exactly the same, but similar.

No, the density of each element cannot be found directly on the periodic table. The periodic table typically provides information on the atomic number, atomic weight, and symbol of each element. However, the density of each element can be found in reference materials and online databases.

As you move from left to right on the periodic table, the atomic masses generally increase. This is because the number of protons and neutrons in the nucleus of the atom also increases as you move across a period.

The periodic label for sulfur is S, which is its chemical symbol.

Yes, as you move across a row (period) of the periodic table from left to right, the atomic radius tends to decrease. This is due to the increasing effective nuclear charge, which pulls the electrons closer to the nucleus, making the atoms smaller.

Newland's octet rule was proposed in the late 19th century, specifically in 1865. This rule states that elements tend to combine in such a way that they each achieve a full outer electron shell with eight electrons, similar to the noble gases.

Ni (and not NI) is the symbol for the element nickel.

No, gluten is a molecule not an element. Gluten's chemical formula is C29H37N5O9.

Yes, alkali metals are highly reactive because they have one valence electron that they readily donate to achieve a stable electron configuration. This makes them extremely reactive with water and air, which results in explosive reactions.

Well all of the metals except mercury are solids, and they are on the left side of the table. Along the stair-steps are the metalloids, which have metallic properties and nonmetallic properties. So those are solids. Nonmetals are solids, liquids and gases at STP (standard temperature and pressure). The right side is mostly gases though, the only solids at STP across the stair step are sulfur and iodine, the rest are gases and solids. in terms of melting and boiling points, they decrease across the table, because gases have very low melting and boiling points and they are more prominent in the right side of the table. Other properties such as malleability and ductility decrease across the table. In terms of Chemical properties, they change according to number of valence electrons... and I'm not sure which ones you want me to mention... In terms of chemical reactivity, groups one and two are the most likely to react, and so is group 17, the rest really depends on the number of valence electrons. So if an element say in the transition metals category, the fewer amount of valence electrons, the better. for nonmetals, they're all pretty reactive if they have like 6 or 7 valence electrons. But noble gases barely EVER react...

The elements are simply Tellurium and Iodine that didn't obey Mendeleev's law because the elements' atomic mass are not following along on the fifth row or period of the normal periodic table today's use.

The Nelson Science Textbook of Grade 9 for Ontario states that Mendeleev's periodic table on pages 126-127 includes elements arranged by increasing atomic mass and grouped with similar properties. Mendeleev left gaps for undiscovered elements and predicted the properties of these missing elements based on the pattern of the known elements.

Can you define more clearly what you mean by 'Strongest'? That can cover a vast number of different categories and there are many different metals which can be considered the strongest, according to your specification.

Chlorine is the element in the halogen family located in period 3 of the periodic table.

The minimum headroom above a stair step is usually around 6 feet 8 inches, in order to provide comfortable clearance for people walking up or down the stairs without hitting their heads. However, building codes and regulations may vary, so it's best to check with your local authorities for specific requirements.

The lightest element on the periodic table with no stable isotopes is hydrogen. It only has one proton in its nucleus and no stable isotopes.

Group 1 elements (alkali metals) have low electronegativity on the periodic table. This is because they have only one valence electron and are more inclined to lose rather than gain electrons.

A neutron is a subatomic particle that is found in the nucleus of an atom. It has no electric charge and is slightly heavier than a proton. Neutrons help stabilize the nucleus of an atom by balancing the repulsive forces between positively charged protons.

The two main arrangements of the periodic table are the groups, which form the columns of the table, and the periods, which form the rows. There are some similarities between elements in the same period, but most similarities are shared within the groups of elements.

Periods in the periodic table represent the number of electron shells an element's atoms have. As you move across a period from left to right, the number of protons increases by one, resulting in a gradual change in chemical properties. Elements in the same period generally have similar outer electron configurations.

Nitrogen is the nutrient that has the greatest direct influence on eutrophication. Excessive nitrogen in water bodies can lead to the overgrowth of algae and other aquatic plants, leading to oxygen depletion and negative impacts on aquatic ecosystems.

Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, Neon.