Size of cation is always smaller than the parent atom.This is because when an electron is removed from the parent atom, positive charge of nucleus per electron will increase.As a result electrostatic force of attraction increases.Hence atomic size decreases.
So Na has a larger atomic radius than Na+.
Question 3 (1 point) Which of the following is true about the radii of Na and...
Question 1 (1 point) Which of these describes atomic radii as one moves from top to bottom within a group? The atomic radius is the same within a group. The atomic radius decreases from top to bottom within a group. The atomic radius does not vary in any predictable way within a group. The atomic radius increases from top to bottom within a group.
Question 3 1 pts Which of the following is TRUE about coalescent theory? The coalescent point represents the origin point of a particular allele Loci that are under directional selection exhibit shorter coalescent times than neutral loci in the same population The coalescence time can be used to calculate the mutation rate for a locus O Coalescence times will be shorter in larger populations Question 4 1 pts In a very large population of plants, 50% of AA individuals survive...
Question 2 (1 point) Which of these describes atomic radii as one travels across a period (from left to right)? There is no change in the atomic radius across a period. The atomic radius does not vary in any predictable way across a period. The atomic radius increases as one moves across a period. The atomic radius decreases as one moves across a period.
Which of the following statements about effective nuclear charge and shielding is/are true? Select all the correct answers however penalties will be applied for incorrect guesses. Select one or more: Higher effective nuclear charges typically give larger atomic radii Electrons in inner orbitals shield more effectively than electrons in outer orbitals Electrons in outer orbitals shield more effectively than electrons in inner orbitals Higher effective nuclear charges typically give smaller atomic radii The effective nuclear charges of the first row...
Question 5 (1 point) The atomic radius is generally larger than the ionic radius for anions. True False
1. Which of the following have larger radii than a chlorine atom? Select all that apply CI Na
Make su Make su Which of the following statements about periodic properties is true: O The density of elements tende to decreto donna con The density of elements tends to decrease down a column in the periodic table Numi O In general, atomic radii decrease across a row in the periodic table There ar In general, ionization energy of elements increases down a column in the periodic table Cations are larger than their corresponding neutral atoms O The metallic character...
Question 1 (1 point) Saved Which of the following is closest to the colour index a star having the same luminosity as the Sun and a radius twice as big as the Sun ? Question 1 options: -0.25 0.15 0.50 1.25 0.75 Question 2 (1 point) Saved Which of the following is closest to the radius of a star at a distance of 10 pc having an Apparent Magnitude of 0 and whose light spectrum peaks at 5000 Angstroms ?...
Question 6 3 out of 3 points The ratio of sizes of the ionic radii of anions and cations in a unit cell has no influence on how anions and cations pack together in that unit cell. Is this true or false? Question 7 3 out of 3 points Materials that can have more than one crystal structure are called polymorphic or allotropic. Which of the following terms refers to compounds having more than one crystal structure? Question 8 3...
Electron radii problem. I thought that P(-3) would have the
smallest radius because it is the same as MG, but the answer key
says CA 2+ is the smallest. Can anyone explain this?
thanks.
5. The following ions are isoelectronic, meaning that they have the same number of electrons. Which of these ions has the smallest atomic radius? (a) Ca+ (b) K (c) Cl 2-