Question Text
Question 2 :
An element X occurs in short period having configuration ns<sup>2</sup>np<sup>1</sup>. The formula and nature of its oxide is -
Question 3 :
The properties of an element are determined largely by the electrons in its __________ shell. <br/>
Question 4 :
Which of the following is/are generally true regarding effective nuclear charge (Zeff) :
Question 8 :
In which of the following arrangements the order is NOT according to the property indicated against it ?
Question 9 :
In the isoelectronic species, the ionic radii of N<sup>3-</sup>, O<sup>2-</sup> and F<sup>-</sup> are respectively given by -
Question 12 :
Which of the following pairs has both members from the same group of periodic table ?
Question 13 :
The number of electrons in the valence shell is equal to :
Question 15 :
Which of the following pairs of atomic numbers represent elements belonging to the same group"
Question 18 :
Which of the following pairs of elements forms a compound with maximum ionic character ?
Question 19 :
An element $X$ combines with oxygen to form an oxide ${X}_{2}O$. To which group of the periodic table does the element $X$ belong?
Question 21 :
The shape of water molecule which should be tetrahedral has a bent or distorted tetrahedral shape with a bond angle <img style='object-fit:contain' src='https://storage.googleapis.com/teachmint/question_assets/JEE%20Main/5e79829aadb2ea6185a762a6' height='21' width='41' >. What could be the reason for this?
Question 24 :
Which of the following commonly forms ionic compounds as a $-1$ anion?
Question 25 :
An ionic bond A+ B- is most likely to be formed when :
Question 27 :
The maximum number of H-bonds a water molecule can form are
Question 28 :
Which is the weakest among the following type of bond ?