Periodic Table

The chemical equation representing the reaction of magnesium (Mg) with oxygen (O2) to form magnesium oxide is: 2Mg + O2 → 2MgO The "c" in your equation does not have a clear designation in this context.

The group number tells you the number of valence electrons in the outer shell. This is important because it is the valence electrons that participate in bonding, and thus in determining the properties of the element.

Bromine (Br2) is the third most reactive halogen.

Let us do this in two parts for clarity. Find atoms in tin first.

10 grams tin (1 mole Sn/118.7 grams)(6.022 X 1023/1 mole Sn)

= 5.07 X 1022 atoms of tin

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5.07 X 1022 atoms (1 mole Pb/6.022 X 1023)(207.2 grams/1 mole Pb)

= 17 grams of lead

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I can see two other ways to do the conversion string, one longer and one much shorter. See if you can find them.

hydrogen has the least mass of all the elements, so yes in a way, it is.

Yes, hydrogen is on its own in the periodic table as the first element. It is the lightest and simplest element, with atomic number 1 and symbol H.

Thulium is an lanthanide element with atomic number 69.

This song, originally sung by Tom Lehrer, mentions 102 elements. The lyrics can be found online.

While theoretical approaches like computational chemistry can provide insights into reaction mechanisms, experimental validation is necessary to confirm the proposed mechanism. Experimentation allows for the observation of intermediates, rate laws, and other key details that are crucial for elucidating the complete reaction pathway. Theory and experiment are often combined to develop a comprehensive understanding of reaction mechanisms.

Copper is in the top-right of the transition metals section of the table, in between zinc and nickel.

The symbol is Cu and the atomic number is 29.

CH4 is not on the periodic table because the periodic table only lists individual elements, not compounds. CH4 is a chemical compound made up of one carbon atom and four hydrogen atoms, so it is not listed as a single element on the periodic table.

on moving down the group the atomic size as well as nuclear charge inreases.But the effect of increase in atomic size is much more pronounced than that of nuclear charge and thus the additional electrons feels less attraction consequently electron gain enthalpy becomes less negative on going down the group

The metals, except for mercury, which is liquid at room temperature.

Parentheses are used for the formula Al(OH)3 to indicate that the hydroxide group (OH) is grouped together and that there are three of them bonded to the aluminum atom. This notation helps to clarify the composition and structure of the compound.

The halogens are located in Group 17 of the periodic table. They include elements such as fluorine, chlorine, bromine, iodine, and astatine. Halogens are highly reactive nonmetals with seven valence electrons.

Every nitrogen atom has 7 electrons. There are 7, 8 and 9 neutrons in nitrogen-14, nitrogen-15 and nitrogen-16 isotopes respectively.

Group 17 elements (halogens) tend to gain electrons to achieve a full outer shell, becoming negatively charged ions called anions. This electron gain allows them to attain a stable configuration similar to noble gases.

Uranium is a very reactive element; uranium can form alloys or compounds with the majority of the other elements. Uranium is also soluble in nitric acid.

No, the actinide and lanthanide series are not considered transition metals. Transition metals refer to elements found in the d-block of the periodic table, whereas actinides and lanthanides are part of the f-block. The transition metals are known for their characteristic properties like variable oxidation states and the formation of colored compounds.

There is only one N and it stands for nitrogen.

However there are other elements that start with N such as Neon (Ne), Nickel (Ni), Neodymium (Nd), Sodium (symbol: Na), neobium (Nb), Nobilium (No), neptunium (Np).

hydrogen has no family on the periodic table.. its a loner

Copper is one of the best materials that embodies the physical property of conductivity. It is widely used in electrical wiring and electronics due to its high conductivity. Silver is another material known for its exceptional conductivity, but it is less commonly used due to its cost.

Potassium and Lanthanum would most likely form a chemical compound through ionic bonding, while Iodine and Neon would not form a compound because Neon is a noble gas and does not readily react with other elements.

Elements from the periodic table are identified by their atomic number, which represents the number of protons in the nucleus of an atom. Each element also has a unique symbol (e.g. H for hydrogen) and name, which are used to classify and differentiate them. Additionally, elements are organized in the periodic table based on their chemical and physical properties.

The Noble Gases. Helium (He), Neon (Ne), Argon (Ar) , Krypton (Kr) ,Xenon (Xe) and Radon (Rn) which is radioactive.