Periodic Table

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Bi is the symbol for the chemical element 'Bismuth'.

Actually, it stands for the number of electrons. Then, in a neutral atom, number of protons are equal to the electrons. So this statement is correct.

Some common nicknames for technetium are "Tc" and "Tech."

Lead is an element---Go to http://en.wikipedia.org/ and look up lead---Natural or Synthetic is irrelevant when you're talking about elements. (If you don't know what I'm talking about, then maybe you ought to also read the wikipedia article on Chemical Element.)

When an element in Group IIA (such as calcium or magnesium) reacts with an element in VIIA (such as fluorine or chlorine), they form ionic compounds. The Group IIA element will lose electrons to the Group VIIA element, creating ions with opposite charges that attract each other to form a stable compound. These ionic compounds are typically white solids at room temperature.

The basic character of alkali metals increases down the group because as you move down the group, the atomic size increases and the outermost electron is further away from the nucleus. This results in a weaker hold on the outermost electron, making it easier for the metal to lose it and exhibit basic properties.

Hydrogen is the least massive element. It is found in group 1, period 1 on the periodic table.

No, elements in the periodic table are arranged by their atomic number and electron configuration, not their physical properties. However, elements in the same group tend to have similar physical properties due to their similar electron configurations.

The only metal that is liquid (Room temperature is considered to be 200C by chemists.) is mercury it is in group 12 of the periodic table and is a transition metal. Gallium melts at just under 300C so on a hot day it is also liquid.

You can find gases being used or produced in various industrial sectors such as oil and gas, manufacturing, agriculture, and healthcare. For example, in the oil and gas industry, gases are used for drilling operations and in the manufacturing sector, they are used for welding. In agriculture, gases are used in greenhouses for plant growth, and in healthcare, they are used for anesthesia and sterilization.

In the periodic table of the elements there are 7 periods and 18 groups. The rows are called periods and columns are called groups. You may be getting confused by the lanthanides and actinides. These groups of elements are found in two rows at the bottom and seem to not be a part of the table. However, if you find and extended version of the table you will see that, technically, these two rows belong in Periods 6 and 7.

Elements to the right of the periodic table have smaller radii due to increased effective nuclear charge, which attracts the electrons closer to the nucleus. This results in a greater pull on the outer electrons and smaller atomic radii overall.

The symbols on the periodic table represent the different elements. Each symbol is a unique abbreviation for the element's name. These symbols are used to organize and identify the various elements based on their atomic structure and properties.

Very reactive metals are found in Group 1 (alkali metals) and Group 17 (halogens) of the periodic table.

The noble gas configuration for Cobalt (Co) is [Ar] 3d7 4s2.

CM stands for Curium on the periodic table. Curium is a radioactive element with the atomic number 96.

They have the ability to form at least one ion with a partially filled 3D orbital, this leads them to be able to switch between states of oxidation and act as catalysts for reaction . In solid form acting as a heterogeneous catalyst they have the ability to donate or accept electron pairs, weakening bonds in reactants lowering activation energy.

e.g. electron configuration of Ni 2+

1s2 2s2 2p6 3s2 3p6 3d8

Most transition metals do not displace hydrogen in acid because they are not reactive enough to displace hydrogen from acids. Transition metals tend to form stable compounds with acids instead of displacing the hydrogen. This is due to their high ionization energies and tendency to form complex ions.

Careful grinding and gold leaf was used to repair the damage caused by the poor electroplating of the hemispheres. A very thin (0.1 mm) gold gasket was also fitted between the hemispheres to prevent penetration of jets of material from the implosion assembly, which could have deformed the pit or destroyed the urchin initiator inside.

The balanced nuclear equation for the alpha decay of thorium-230 is:

^230Th → ^226Ra + ^4He

Waitress or server- the establishment itself usually picks the term, but generally one of these two.

Group 1 metals, such as lithium, sodium, and potassium, form metal oxides when they react with oxygen. These metal oxides are typically white or colorless solids and are basic in nature.

Non-metal ions typically have a charge that corresponds to the number of electrons they need to gain to achieve a stable electron configuration, usually by gaining enough electrons to fill their outermost energy level. For example, elements in Group 15 usually gain three electrons to form ions with a 3- charge, while those in Group 17 usually gain one electron to form ions with a 1- charge.