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प्रश्न
Identify the wrong statement.
पर्याय
Amongst the isoelectronic species, smaller the positive charge on cation, smaller is the ionic radius.
Amongst isoelectric species greater the negative charge on the anion, larger is the ionic radius.
Atomic radius of the elements increases as one moves down the first group of the periodic table.
Atomic radius of the elements decreases as one moves across from left to right in the 2nd period of the periodic table.
उत्तर
Amongst the isoelectronic species, smaller the positive charge on cation, smaller is the ionic radius.
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संबंधित प्रश्न
Various successive ionisation enthalpies (in kJ mol-1) of an element are given below.
| IE1 | IE2 | IE3 | IE4 | IE5 |
| 577.5 | 1,810 | 2,750 | 11,580 | 14,820 |
The element is
Which one of the following arrangements represent the correct order of least negative to most negative electron gain enthalpy
The element with positive electron gain enthalpy is
The correct order of decreasing electronegativity values among the elements X, Y, Z and A with atomic numbers 4, 8, 7 and 12 respectively
Which of the following is the second most electronegative element?
Which of the following orders of ionic radii is correct?
Which one of the following is true about metallic character when we move from left to right in a period and top to bottom in a group?
What are isoelectronic ions? Give examples.
Energy of an electron in the ground state of the hydrogen atom is −2.18 × 10−18 J. Calculate the ionisation enthalpy of atomic hydrogen in terms of kJ mol−1.
Explain the following, give an appropriate reason.
The electron affinity values of Be and Mg are almost zero and those of N (0.02 eV) and P (0.80 eV) are very low.
