Question 1 :
An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is :

Question 2 :
On moving from left to right across a period of the periodic table, the non-metallic character of the elements :

Question 4 :
The trend of electron affinity from left to right across a period

Question 5 :
<table><tr><th>Column A </th> <th>Column B</th> </tr> <tr><td>1. Proton</td> <td>a.An alkaline earth metal</td> </tr> <tr><td>2. Sodium</td> <td>b.Halogen</td> </tr> <tr><td>3. Barium</td> <td>c.Noble gas</td> </tr><tr><td>4. Chlorine</td> <td>An alkali metal</td> </tr><tr><td>5. Electron</td> <td>d.Responsible for nuclear charge</td> </tr><tr><td>6. Completed shell</td> <td>e.Occupied sub-shell.</td> </tr></table>

Question 6 :
On moving from left to right across a period of the periodic table, the electron affinity of the elements in groups 1 to 7 :

Question 8 :
If an element gains one or more electrons with energy, it can be called as

Question 9 :
The element in group 17 (VIIA) which one is in liquid state at room temperature

Question 16 :
Which of the following compounds is obtained when lime water dries up.

Question 18 :
Which one of the following will not produce an acid when made to react with water ?

Question 21 :
Molecular reactions which are generally slow reactions are shown by :

Question 23 :
The number of electrons lost or gained by an atom refers to :

Question 24 :
The capacity of an atom to attract the shared pair of electrons towards itself is called :

Question 29 :
A compound which contains all the three types of bonds i.e., ionic, covalent and coordinate is :

Question 30 :
Which of the following is a common characteristic of a covalent compound ?