Chemistry part 4

Metals generally have a high melting point and high boiling point. This is due to the strong attraction between metallic bonds, because these positive metallic ions are very tightly bound between large amounts of free electrons.

Metal are generally ductile, malleable and good conductor of heat and electricity. Ductility is a property where a substance can be drawn into thin wires. Metals are malleable because they consist of layers of atoms. These layers can slide over one another when the metal is bent, hammered or pressed.

Generally, malleability (soft) and ductile properties are found in all metals, and gold (Au) is the most ductile among the given metals. Mercury (Hg), sodium (Na), and potassium (K) do not possess the malleable and ductile properties of metals, these being exceptions.

Generally, malleability (soft) and ductile properties are found in all metals, and gold (Au) is the most ductile among the given metals. Mercury (Hg), sodium (Na), and potassium (K) do not possess the malleable and ductile properties of metals, these being exceptions.

Generally, malleability (soft) and ductile properties are found in all metals, and gold (Au) is the most ductile among the given metals. Mercury (Hg), sodium (Na), and potassium (K) do not possess the malleable and ductile properties of metals, these being exceptions.

Generally, malleability (soft) and ductile properties are found in all metals, and gold (Au) is the most ductile among the given metals. Mercury (Hg), sodium (Na), and potassium (K) do not possess the malleable and ductile properties of metals, these being exceptions.

Metallurgy is defined as a process that is used for the extraction of metals in their pure form. There are various steps in the process of metallurgy, such as crushing and leaching ore into complete or small picces.

Metals generally form basic oxides. For example, the oxides of sodium (Na) and magnesium (Mg) are of basic nature, Na, O, and MgO respectively.

The correct answer is Aqua regia. It is a highly corro- sive mixture of concentrated nitric and hydrochloric acids, and it is one of the few substances that can dis solve noble metals such as gold and platinum. For- mic acid, acetic acid, and chloroform are not capable of dissolving noble metals like gold and platinum.

In semiconductors, a donor atom is one that, when mixed with a semiconductor, forms an n-type semiconductor. For example, when silicon (Si), which has four valence electrons, mixes with elements from the fifth group of the periodic table, phosphorous (P), arsenic (As), antimony (Sb), which has five valence electrons, then by this combination, one electron is left after the completion of the octet, while the electron helps in the flow of negative charge in the semiconductor, which leads to the formation of n types of semiconductors. In semiconductors, an acceptor atom is one, after which the semiconductor is mixed to form a p-type semiconductor. For example, when elements from the third group of the periodic table, boron (B) or aluminium, which have three covalent electrons, are added to silicon, which has four covalent electrons, the octet is not completed by this combination. An electron is required for which a hole is left vacant, which is positively charged, forming a P-type semiconductor. Therefore, phosphorus, antimony, and arsenic are atom donors, while aluminium is an electron acceptor.