Periodic Table

T stands for Tungsten in the periodic table. Tungsten is a metal with the atomic number 74.

The bottom section of the periodic table is for the lanthanides and actinides, which are also known as the inner transition metals. These elements are placed below the main body of the periodic table to keep it compact, as they would otherwise disrupt the table's organization.

The Nobel gases are a group of elements that include helium, neon, argon, krypton, xenon, and radon. These elements are known for their stability and low reactivity due to having a full outer electron shell.

The first nonmetal on the fourth row of the periodic table is oxygen.

He is color blind and he named color blindness of red, blue, purple, and yellow. he named it daltonisum.

Stainless steel is classified as a homogeneous mixture because it is a solid solution of different metals, primarily iron, chromium, nickel, and carbon. These components are evenly distributed throughout the material on a microscopic level.

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Krypton is a noble gas and is classified as a representative element.

Neon Ne is the chemical symbol for neon, a noble gass.

The only liquid in group 17 of the periodic table is bromine. It is a dark red-brown liquid at room temperature.

It's beta decay. Actually, it's beta minus decay. A neutron in the nucleus of thorium-234 undergoes beta minus decay and changes into a proton with the subsequent release of an electron, an antineutrino and some energy. The transformation of a neutron in the thorium nucleus into that proton creates another element. You'll recall that the identity of an element is determined solely by the number of protons in its nucleus. And our thorium atom has now become a protractinium-234 atom. Links are provided below for more information.

Mendeleev organized the elements in his table by increasing atomic mass and grouping elements with similar properties together. He left gaps in his table for unknown elements and accurately predicted the properties of these missing elements based on the patterns he observed.

a none of them

b every eighth elements

c all of them

d half of them

Filtering a mixture is necessary to separate the desired component from the unwanted solid particles or insoluble impurities. The filter allows the liquid or soluble component to pass through while trapping the solid particles, resulting in the desired product. This process helps improve the purity and quality of the final substance.

Fluorine is the most reactive nonmetal in period 2 of the periodic table.

Bromine and Chlorine both have equal chemical properties. They both have 7 electrons in the outermost energy level. They both gain 1 electron to get the noble gas configuration.

Cl and Br have same chemical properties. They have 7 valence electrons. They both are non-metals.

In the periodic table, the Group 2, Period 4 element is calcium. Calcium is classified as a silvery-gray metal. Calcium is the most abundant of the metallic elements in the human body.

The most common mistake is to calculate the slope incorrectly by dividing the change in x by the change in y instead of dividing the change in y by the change in x. This mistake can result in an incorrect slope value.

Na is sodium

Po is Polonium

Na and Po can not form a compound.

You must mean

"Na3PO4" otherwise known as TRISODIUM PHOSPHATE.

This molecule is made up of

Sodium = Na (3 atoms)

Phosphorous = P (1 atom)

Oxygen = O (4 atoms)

Thus Na3PO4 contains 8 atoms in total.

Therefore 2 of these 2(Na3PO4) or 2Na3PO4 must have 16 atoms present.

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they termed as lanthanide because the lighter elements in series are chemically similar to lanthanum

Non metals do not conduct heat. They have high resistance.They are insulators.

Non metals do not have a pool of 'free electrons' (as metals do with metallic bonds). Hence they generally are poor conductors of heat. Nonmetals such as Styrofoam are widely used as insulators. Graphite is an exception as it is a good conductor of heat with its free electrons.

Most of the non metals does not conductors because the do not have free electrons. But graphite is a good conductor. Most of the non metals are insulators.

The gaps in the periodic table provided a framework for scientists to predict the properties of undiscovered elements based on the trends and patterns observed in the known elements. By identifying missing elements in the periodic table, scientists were able to focus their search on regions where certain properties were expected based on the elements surrounding the gaps. This guided experimental efforts to discover and synthesize new elements.

The period number is equal to the number of energy levels. Elements of period 3 have 3 energy levels. Na,Mg,Al,Si are few elements in the period 3.