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Chemical Reactivity

If an element...

Question

If an element has a low ionization energy then it is likely to have the _______ atomic size among all the elements in the same period.

A

largest

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B

smallest

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C

constant

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D

none of these

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Solution

The correct option is A largest
As we move along a period, atomic size decreases and ionisation potential increases so if an element has a low ionization energy then it is likely to be in left side of period and have largest radius.

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Similar questions

Q. Fill in the blanks by selecting the correct word from the brackets :
(i) If an element has a low ionization energy then it is likely to be _________ (metallic / non metallic).
(ii) If an element has seven electrons in its outermost shell then it is likely to have the _______ (largest / smallest) atomic size among all the elements in the same period.

Q. The following questions refer to the Periodic Table.
(a) (i) Name the first and last element in period 2.
(ii) What happens to the atomic size of elements moving from top to bottom of a group?
(iii) Which of the elements has the greatest electron affinity among the halogens?
(iv) What is the common feature of the electronic configurations of the elements in group 7?

(b) Supply the missing word from those in the brackets:
(i) If an element has a low ionization energy then it is likely to be _________ (metallic/non-metallic).
(ii) If an element has seven electrons in its outermost shell then it is likely to have the ________ (largest/smallest) atomic size among all the elements in the same period.

(c) (i) The metals of Group 2 from top to bottom are: Be, Mg, Ca, Sr, Ba. Which of these metals will form ions most readily and why?
(ii) What property of an element is measured by electronegativity?

Q. An element with low ionization potential is most likely to form a covalent bond with an other element having a high electron affinity.

Q. The atomic number of elements A, B and C are (Z - 1), Z and (Z + 1) respectively. B is an inert gas (not helium). Which element among A,B and C has the highest ionization energy? Why?

Q. Element X is the first element of alkaline earth metals family. An element Y is the first element of alkali metals family. An element Z is the first element of the halogen family. Among the three elements which one has a larger atomic size?

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