Germanium is a semi-metal present in group 14 of the periodic table. Its atomic number is 32 whereas its atomic mass is 72.63. Germanium has 32 electrons. It has 32 protons and 42 neutrons in its nucleus. Germanium is represented by the symbol “Ge”.
The reactions in which two molecules of the same or different compounds combine to form a new substance with or without the elimination of a small molecule like H2O or NH3, are called condensation reactions.
Argon is a noble gas in group 18 of the periodic table. Its atomic number is 18 whereas its atomic mass is 39.94. Argon has 18 electrons.
The fractional distillation of petroleum gives only around 20% fuel. As a result of its high demand, this supply is augmented by transforming excess supplies of less desirable oil fractions such as kerosene oil and gasoline oil into fuel by a process called cracking.
Arsenic is a semi-metal present in group 15, a member of the nitrogen family. The atomic number of arsenic is 33 and its atomic mass is 74.92.
Phosphorus is a member of group 15 located just below the nitrogen. Phosphorus has 15 electrons. Its atomic number is 15 whereas its atomic weight is 30. It has 5 electrons in its valance shell so is a multivalent element.
Nitrogen is the seventh element of the periodic table located in group 15. Nitrogen has 7 electrons. The nitrogen has atomic number 7 whereas its atomic weight is 14.
Chromium is a transition metal with atomic number 24 and atomic mass 52 present in group 6 of the periodic table. Chromium has 24 electrons. It has 24 protons and 28 neutrons in its nucleus.
Bromine is one of the members of the halogen family which makes group VIIA of the periodic table. Like other halogens, its salts are quite famous and are widely used.
Manganese is a transition metal in group VII b. Manganese has 25 electrons. Its atomic number is 25 whereas its atomic mass is 54. The symbol of Manganese is ‘Mn’.