The number of valence electrons in a gra...

The number of valence electrons in a graphite atom is :

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LAKHMIR SINGH & MANJIT KAUR-STRUCTURE OF ATOM-Exercise

In a sample of ethyl ethanote (CH(3)COOC(2)H(5)) the two oxygen atoms ...
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Which of the following elements does not exhibit electrovalency ?
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The number of valence electrons in a graphite atom is :
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The atomic numbers of four elements A,B,C and D are 12,13,15 and 3 res...
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The number of valence electrons in a sulphide ion, S^(2-) is :
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For an element, Z = 9. The valency of this element will be :
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Four elements W,X,Y and Z contain 8,11,9 and 17 protons per atom respe...
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The four atomic species can be represented as follows. Out of these, t...
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There are four elements P,Q,R and S having atomic numbers of 4,18,10 a...
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The atomic number of an element X is 8 and that of element Y is 4. Bot...
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The isotopes of an element contain :
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Which is the number of valence electrons in : (a) sodium ion, Na^(+)...
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Atom A has a mass number 209 and atomic number 82 Atomic B has a mas...
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Which of the following pairs are isotopes ? Give reasons for your choi...
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Three different atoms of oxygen are represented as : .(8)^(16)O,.(8)...
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The atomic species A and B have different number of protons but the sa...
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Composition of the nuclei of two atomic species A and B is given as un...
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Which of the following pairs are isobars ? (i) .(26)^(58)A, .(28)^(5...
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The number of protons, neutrons and electrons in particles A to E are ...
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The composition of two atomic particles is given below : {:(,"X","Y"...
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