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Problems
7. How do you account for the inert character of dinitroge..
Formation of magnesium chloride
Magnesium whose atomic number is 12, has 2, 8, 2 configuration. So, it has two electrons in its valence shell. The electronic configuration of chlorine (At. no. 17) is 2,8,7. So it has seven valence electrons. Since, magnesium has two electrons in excess of the neon configurati..
Magnesium whose atomic number is 12, has 2, 8, 2 configuration. So, it has two electrons in its valence shell. The electronic configuration of chlorine (At. no. 17) is 2,8,7. So it has seven valence electrons. Since, magnesium has two electrons in excess of the neon configurati..Relation between Mass Number and Atomic Number
Atomic Number (Z) is the number of protons in the nucleus of an atom. It is also equal to the number of electrons since the atom is electrically neutral. Mass Number (A) is the total number of neutrons and protons present in the nucleus of an atom. The periodic law given earlier is now modifie..
Atomic Number (Z) is the number of protons in the nucleus of an atom. It is also equal to the number of electrons since the atom is electrically neutral. Mass Number (A) is the total number of neutrons and protons present in the nucleus of an atom. The periodic law given earlier is now modifie..Bonding in hydrogen fluoride (HF)
Fluorine atom has seven electrons in its valence shell and needs one electron to complete its octet. Hydrogen atom also has a tendency to share one electron to acquire configuration of helium. When the two atoms approach each other, the overlapping of 1s-orbital of hydrogen and 2p z , or..
Fluorine atom has seven electrons in its valence shell and needs one electron to complete its octet. Hydrogen atom also has a tendency to share one electron to acquire configuration of helium. When the two atoms approach each other, the overlapping of 1s-orbital of hydrogen and 2p z , or..Magnetic Quantum Number (m)
, +1 or p-subshell contains three orbitals called p- orbitals. If l=2, m may be -2, -1, 0, +1, +2 or d-subshell contains five orbitals called d-orbitals. Similarly, it can be shown that f-subshell can have seven orbitals. The number of orbitals in a subshells are given belo..
, +1 or p-subshell contains three orbitals called p- orbitals. If l=2, m may be -2, -1, 0, +1, +2 or d-subshell contains five orbitals called d-orbitals. Similarly, it can be shown that f-subshell can have seven orbitals. The number of orbitals in a subshells are given belo..Position of Chlorine in the Periodic Table
1.Chlorine is placed second after fluorine in group VIIA. 2. Other members of this group are fluorine, bromine, iodine and astatine (the last member is radioactive). 3. Members of this group are called 'halogens' meaning salt producers. 4. Atoms of halogens have seven electro..
1.Chlorine is placed second after fluorine in group VIIA. 2. Other members of this group are fluorine, bromine, iodine and astatine (the last member is radioactive). 3. Members of this group are called 'halogens' meaning salt producers. 4. Atoms of halogens have seven electro..Representative Periodic Table for 8 Groups upto Calcium (Atomic Number -20)
Representative elements are those elements whose inner shells are complete and whose outer shell (valency shell) has 1 to 7 electrons. They are also called normal elemen..
Example: 5
Calculate the number of moles of nitrogen in 7g of nitroge..
Periods
There are seven periods in the periodic table and each period starts with a different principal quantum number. The first period corresponding to 'n' = 1 consists of only two elements hydrogen (1s 1 ) and helium (1s 2 ). This is because the first energy shell has only one orbital (1s), w..
Problems
4. Write the possible isomers of the aromatic compound having molecular formula C 7 H 7 Cl. Which of these have weakest C-Cl bon..
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