Question 5 :
The group in which all the elements do not have same number electrons in their valence shell is :

Question 7 :
The total number of valency electrons in <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea7f876a3d2442ab8292f80"> ion is:

Question 9 :
Compound formed from the combination of an element X (atomic number 20) with the element Y (atomic number 17) is $X_PY_Q$. Find the value of P+Q.

Question 10 :
a) The substance which loses electrons is called reducing agent.&#160;<br/>b) The substance which gains electrons is called oxidizing agent.&#160;<br/>Find out which is true or false statement.&#160;<br/>

Question 13 :
As one moves along a given row in the Periodic Table, ionisation energy

Question 14 :
For a covalent solid, the units which occupy lattice points are:

Question 15 :
The energy released when a neutral gaseous atom takes up an electron is called:

Question 18 :
Valency of Boron in ${ BF }_{ 3 }$ molecules is _________.

Question 20 :
The number of unpaired electrons in <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea7f710a3d2442ab8292c6d"> molecule is:

Question 23 :
The second electron gain enthalpies $(in kJ {mol}^{-1})$ of oxygen and sulphur respectively are :

Question 28 :
Both lithium and magnesium display several similar properties due to diagonal relationship, however, the one which is incorrect, is

Question 29 :
Which one of the following belongs to representative group of elements in the Periodic Table?

Question 30 :
Which property of halogens increases from <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea7f727fdd8313cc8725e27"> to <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea7f79ea3d2442ab8292cfe"> ?

Question 31 :
If atoms of elements have completely filled outermost shell then their combining capacity or valency is&#160;:

Question 32 :
The elements present in the core of earth are collectively known as

Question 33 :
In a double bond connecting two atoms there is a sharing of:

Question 35 :
The maximum number of valence electrons&#160;possible for atoms in the second period of the&#160;periodic table is :

Question 37 :
The correct order of ionisation energy for comparing carbon, nitrogen and oxygen is

Question 39 :
<p>Which one&#160;of the following statements about stable configuration is not correct?</p>

Question 41 :
In a multi-electron atom, the energy of a <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea7f7a5a3d2442ab8292d24"> -orbital is :

Question 44 :
Which of the following pairs show reverse properties on moving along a period from left to right and from top to down in a group?

Question 49 :
Among <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea7f8e9a3d2442ab8293076"> and <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea7f8eaa3d2442ab8293077"> the <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea7f7a6a3d2442ab8292d30"> has highest melting point because :