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NEET Questions / Chemistry / Classification of Elements and Periodicity in Properties / Position Of Element In P.T
An element 'X' has the highest third ionization enthalpy in the 3d series. Which of the following is most likely to be 'X'?
Cr
Mn
Fe
Cu
Which of the following properties generally decreases across a period from left to right, but shows an anomalous increase at Group 15 elements compared to Group 14 and 16 elements?
Ionization enthalpy
Atomic radius
Electronegativity
Electron gain enthalpy
An element 'X' in the third period exhibits a sharp increase in its third ionization enthalpy. Element 'X' forms an amphoteric oxide and reacts with both acids and bases. Identify 'X'.
Mg
Si
P
Al
Which element in the fourth period exhibits the lowest second ionization enthalpy?
Potassium (K)
Calcium (Ca)
Gallium (Ga)
Krypton (Kr)
The element with the highest electronegativity in the third period forms a compound with fluorine. What is the expected hybridization of the central atom in this compound?
sp
sp²
sp³
sp³d
Element 'X' has the following properties: it exhibits variable oxidation states, forms coloured compounds, and its highest oxidation state corresponds to its group number. 'X' is most likely situated in which block of the periodic table?
s-block
p-block
d-block
f-block
An element X belongs to group 14 and period 3 of the periodic table. What is the number of valence electrons in X?
2
4
6
8
Which block of the periodic table contains elements with their outermost electrons in the p-subshell?
s-block
p-block
d-block
f-block
An element has the electronic configuration . In which period and group is this element located?
Period 2, Group 17
Period 3, Group 15
Period 3, Group 17
Period 4, Group 17
