Question 4 :
The distance between the centre of a nucleus and the outermost orbit of the atoms is called__________.

Question 6 :
Which of the following is a correct statement about non-metallic atoms?

Question 9 :
Mark the statement which is not a correct property of metals?<br/>a) All metals exhibit colour.<br/>b) All metals are solid at room temp.<br/>c) Metals are electronegative in nature.

Question 13 :
Most metallic element has the following electron&#160;arrangement in its atom is<span>&#160;:</span><br/>

Question 16 :
The distance between the centre of nucleus and the outermost shell of an isolated atom is known as<span>&#160;:</span>

Question 18 :
What is the Trends of Variation of atomic radius along a period?

Question 19 :
Which of the following is a correct statement about metallic atoms?

Question 21 :
The correct order of size of the three species $Ca,$ $Ca^+$ and $Ca^{2+}$ is<span>&#160;:</span>

Question 22 :
Listed below are the electronic configuration of five elements. Arrange the elements in the increasing order of metallic character:<div><br/>(a) $[Ar] 3d^{10} 4s^2$ &#160; &#160;</div><div>(b) $[Ar] 4s^2$<br/>(c) $[Ar] 3d^{10} 4s^2 4 p^6 5s^2$ &#160; &#160;&#160;</div><div>(d) $[Ar] 3d^{10} 4s^2 4 p^5$<br/>(e) $[Ar] 3d^{10} 4 s^2 4 p^6 5s^1$</div><div><br/></div>

Question 23 :
Which of the following increases the acidic character of compounds of central element $(E)$?

Question 25 :
An element has cubic close packed structure. The distance between adjacent layers is $424.2$ pm. What would be the atomic radius of the element?

Question 27 :
The $C-C$ and $Si-C$ inter-atomic distance are $154\ pm$ and $188\ pm$. the atomic radius of $Si$ is:

Question 28 :
Which of the following set of elements is written&#160;in order of their increasing metallic character?

Question 30 :
Which of the following elements, having atomic number as below possesses non-metallic property?

Question 32 :
The term periodicity is the properties of elements, which are arranged in the increasing order of their atomic&#160;numbers. Then the&#160;elements with&#160;similar properties:<br/>

Question 34 :
In which one of the following pairs the radius of the second species is greater than that of the first ?

Question 35 :
Which characteristics are required for a element to behave as electrical conductor?

Question 36 :
<div><span>Name the element with the biggest atomic radius of the following:</span><br/></div>

Question 39 :
Arrange the following elements in the order of their increasing non-metallic character:<div><br/>Li, Be, C, O, F<br/></div>

Question 40 :
The number of gases present in long form of the periodic table are:<br/>

Question 41 :
The correct sequence which shows decreasing order of the ionic radii of the elements is:&#160;

Question 42 :
The ground state electronic configurations of the elements, U, V, W, X and Y (these symbols&nbsp; do not have&nbsp;any chemical significance) are as follows:<br>U&nbsp; &nbsp;$1s^2 2s^2 2p^3$&nbsp; &nbsp; &nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;V $1s^2 2s^2 2p^6 3s^1$<br>W&nbsp; $1s^2 2s^2 2p^6 3 s^2 3p^2$&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;&nbsp;X $1 s^2 2s^2 2 p^6 3s^2 3p^6 3d^5 4s^2$<br>Y $1 s^2 2s^2 2p^6 3s^2 3p^6 3d^{10} 4s^2 4 p^6$<br>Determine which sequence of elements satisfy the following statements:<br>(i) Element forms a carbonate which is not decomposed by heating<br>(ii) Element is most likely to form coloured ionic compounds<br>(iii) Element has largest atomic radius<br>(iv) Element forms only acidic oxide

Question 43 :
If the nucleus $_{13}^{27}Al$&nbsp; has a nuclear radius of about 3.6 fm, the $_{52}^{125}$Te would have its radius approximately as:<br>

Question 44 :
Which one of the following is correct order of increase of size:

Question 45 :
Which of the following choices both show the correct order of elements by increasing atomic radius AND by increasing ionization energy?