Chemistry-
General
Easy

Question

The electronic configurations of the element A,B, and C are :given below.

Stable form of A may be represented by the formula:

  1. A    
  2. A subscript 2 end subscript    
  3. A subscript 3 end subscript    
  4. A subscript 4 end subscript    

The correct answer is: A

Related Questions to study

General
chemistry-

Lewis concept of covalency of an element involvesoctetrule.Lateronitwasfoundthatmanyelementsin their compounds, e.g., B e F subscript 2 end subscript comma B F subscript 3 end subscript etc. have incompleteoctetwhereasP C l subscript 5 end subscript comma S F subscript 6 end subscript et c.haveexpandedoctet. This classicaconcept also failed inpredictingthegeometryof molecules. Modem concept of covalence was pro­ posed in terms of valence bond theory. Hybridizationconcept along with valence bond theory successfullexplained the geometryofvariousmoleculesbutfailedin many molecules ThebondangleN O subscript 2 end subscript superscript plus end superscript comma N O subscript 2 end subscriptandN O subscript 2 end subscript superscript minus end superscriptare,respectively:

Lewis concept of covalency of an element involvesoctetrule.Lateronitwasfoundthatmanyelementsin their compounds, e.g., B e F subscript 2 end subscript comma B F subscript 3 end subscript etc. have incompleteoctetwhereasP C l subscript 5 end subscript comma S F subscript 6 end subscript et c.haveexpandedoctet. This classicaconcept also failed inpredictingthegeometryof molecules. Modem concept of covalence was pro­ posed in terms of valence bond theory. Hybridizationconcept along with valence bond theory successfullexplained the geometryofvariousmoleculesbutfailedin many molecules ThebondangleN O subscript 2 end subscript superscript plus end superscript comma N O subscript 2 end subscriptandN O subscript 2 end subscript superscript minus end superscriptare,respectively:

chemistry-General
General
chemistry-

NO is a colorless gasandan important intermediate inthemanufactureof nitricacidby catalytic oxidationofammonia. Whichofthefollowingisaneutraloxide?</span

NO is a colorless gasandan important intermediate inthemanufactureof nitricacidby catalytic oxidationofammonia. Whichofthefollowingisaneutraloxide?</span

chemistry-General
General
chemistry-

NO has11 valence electrons.It is impossible for all1be paired. and hence this is an odd electron molecule,and the gas is paramagnetic. Which of the following species has the smallest N-O bond length?

NO has11 valence electrons.It is impossible for all1be paired. and hence this is an odd electron molecule,and the gas is paramagnetic. Which of the following species has the smallest N-O bond length?

chemistry-General
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General
chemistry-

Many bond angles can be explained by either electronegativity or size arguments. Molecules with larger difference in electronegativity values between central and outer atoms have smaller bond ang les. As the size of outer atom increases, the angle increases. The size of central atom can also be used to determine the bond angles in the series. Which has the smallest bond angle left parenthesis X minus S minus X right parenthesis in the given molecules?

Many bond angles can be explained by either electronegativity or size arguments. Molecules with larger difference in electronegativity values between central and outer atoms have smaller bond ang les. As the size of outer atom increases, the angle increases. The size of central atom can also be used to determine the bond angles in the series. Which has the smallest bond angle left parenthesis X minus S minus X right parenthesis in the given molecules?

chemistry-General
General
chemistry-

Many bond angles can be explained by either electronegativity or size arguments. Molecules with larger difference in electronegativity values between central and outer atoms have smaller bond ang les. As the size of outer atom increases, the angle increases. The size of central atom can also be used to determine the bond angles in the series.

Consider the following hydrides and arrange them in increasing order of bond ang les:
I) N H subscript 3 end subscript
II) P H subscript 3 end subscript
III) A s H subscript 3 end subscript
IV) S b H subscript 3 end subscript

Many bond angles can be explained by either electronegativity or size arguments. Molecules with larger difference in electronegativity values between central and outer atoms have smaller bond ang les. As the size of outer atom increases, the angle increases. The size of central atom can also be used to determine the bond angles in the series.

Consider the following hydrides and arrange them in increasing order of bond ang les:
I) N H subscript 3 end subscript
II) P H subscript 3 end subscript
III) A s H subscript 3 end subscript
IV) S b H subscript 3 end subscript

chemistry-General
General
chemistry-

Many bond angles can be explained by either electronegativity or size arguments. Molecules with larger difference in electronegativity values between central and outer atoms have smaller bond ang les. As the size of outer atom increases, the angle increases. The size of central atom can also be used to determine the bond angles in the series. Consider the following molecules:
I) H subscript 2 end subscript O
II) H subscript 2 end subscript text end text S
III) H subscript 2 end subscript S e
IV) H subscript 2 end subscript T e

Arrange these molecules in increasing order of bond angle:

Many bond angles can be explained by either electronegativity or size arguments. Molecules with larger difference in electronegativity values between central and outer atoms have smaller bond ang les. As the size of outer atom increases, the angle increases. The size of central atom can also be used to determine the bond angles in the series. Consider the following molecules:
I) H subscript 2 end subscript O
II) H subscript 2 end subscript text end text S
III) H subscript 2 end subscript S e
IV) H subscript 2 end subscript T e

Arrange these molecules in increasing order of bond angle:

chemistry-General
parallel
General
chemistry-

A) 
B) 
C) 
In the thiocyanate ion, S C N to the power of minus end exponent three resonance structures are consistent with the electron -dot method Structure A has only one negative formal charge on the nitrogen atom, the most electro negative atom in the ion. Structure B has a single negative charge on the S, which is less electronegative than N. Structure C has charges of -2 on N and +1 on S, consistent with the relative electronegativities of the atoms but with a larger charge and greater charge separation than the first.
HNCs is isostructural with:

A) 
B) 
C) 
In the thiocyanate ion, S C N to the power of minus end exponent three resonance structures are consistent with the electron -dot method Structure A has only one negative formal charge on the nitrogen atom, the most electro negative atom in the ion. Structure B has a single negative charge on the S, which is less electronegative than N. Structure C has charges of -2 on N and +1 on S, consistent with the relative electronegativities of the atoms but with a larger charge and greater charge separation than the first.
HNCs is isostructural with:

chemistry-General
General
chemistry-

A) 
B) 
C) 
In the thiocyanate ion, S C N to the power of minus end exponent three resonance structures are consistent with the electron -dot method Structure A has only one negative formal charge on the nitrogen atom, the most electro negative atom in the ion. Structure B has a single negative charge on the S, which is less electronegative than N. Structure C has charges of -2 on N and +1 on S, consistent with the relative electronegativities of the atoms but with a larger charge and greater charge separation than the first. Predict the hybridization of atom which is bonded with H in structure HNCS:

A) 
B) 
C) 
In the thiocyanate ion, S C N to the power of minus end exponent three resonance structures are consistent with the electron -dot method Structure A has only one negative formal charge on the nitrogen atom, the most electro negative atom in the ion. Structure B has a single negative charge on the S, which is less electronegative than N. Structure C has charges of -2 on N and +1 on S, consistent with the relative electronegativities of the atoms but with a larger charge and greater charge separation than the first. Predict the hybridization of atom which is bonded with H in structure HNCS:

chemistry-General
General
chemistry-

Number of pi bonds sigma bonds in the following structure is:

Number of pi bonds sigma bonds in the following structure is:

chemistry-General
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General
chemistry-

Which of the following reaction staking place in the blastfurnace during extraction of ironsendo thermic?

Which of the following reaction staking place in the blastfurnace during extraction of ironsendo thermic?

chemistry-General
General
chemistry-

Which method of purification is represented by thee quations :

Which method of purification is represented by thee quations :

chemistry-General
General
chemistry-

For the compounds C H subscript 3 end subscript C l comma C H subscript 3 end subscript B r comma C H subscript 3 end subscript I text  and  end text C H subscript 3 end subscript F text  , end text text end textthe correcorder of increasing C- halogebond lengtis:

For the compounds C H subscript 3 end subscript C l comma C H subscript 3 end subscript B r comma C H subscript 3 end subscript I text  and  end text C H subscript 3 end subscript F text  , end text text end textthe correcorder of increasing C- halogebond lengtis:

chemistry-General
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General
chemistry-

In which of the followinpairof molecules/ions, both the species are not likelto exist?

In which of the followinpairof molecules/ions, both the species are not likelto exist?

chemistry-General
General
chemistry-

The hybridization of orbitals of Na to min N O subscript 3 end subscript superscript minus end superscript N O subscript 2 end subscript superscript plus end superscript commaand N H subscript 4 end subscript superscript plus end superscript are respectively

The hybridization of orbitals of Na to min N O subscript 3 end subscript superscript minus end superscript N O subscript 2 end subscript superscript plus end superscript commaand N H subscript 4 end subscript superscript plus end superscript are respectively

chemistry-General
General
General

Rational numbers
Is sum of 12.5 and 36.25 is a rational numbers?

Rational numbers
Is sum of 12.5 and 36.25 is a rational numbers?

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