“Learn about the periodic classification of elements and how periodicity influences their properties, trends, and behavior in the periodic table.”
12th Class Chemistry Chapter 1 Notes
Correct order according to atomic size in the following is: Be > Mg
Which the correct statement: Na+is smaller than Na atom
Number of elements in the first period of the periodic table is: 2
Which of the following element has lowest ionization energy: Boron
Who gave the law of Triads in 1829: Dobereiner
Which is the longest periodic table: 6
Which element has lowest melting point: Magnesium
The basis of modern periodic table is: Atomic number
The concept of atomic number was introduced by: Moseley
Which of the following has highest M.P: Silicon
Which of the following statement is correct: F atom is smaller than F–
Which of the following the highest hydration energy: Mg++
The element of 2nd period, which has highest ionization energy from the following is: N
In modern periodic table VI period contains elements: 32
Which of the following are alkaline earth metals: Be, Mg, Ca
Elements of Groups IIA are called: Alkaline earth metals
Which one is an incomplete period: 7th
Keeping in view size of atoms ,which order is the correct one: Ba > Mg
Which oxide is more basic in nature: BaO
Which element has lowest melting point: Magnesium
Number of elements in the first period of the periodic table is: 2
Which has greater hydration energy: Mg+2
Variable valency is generally exhibited by: Transition elements
Fluorine is in group VIIA of periodic table. Its chemistry will most closely resembles that of: Iodine
Which one of the following sets has coinage metaals is it: Cu, Ag, Au
Which of the following statement is correct: C. F atom is smaller than F<sup>-</sup>
In which block of periodic table non metals are present: p
Important : Review all previous years’ 12 class past papers for comprehensive practice and better exam preparation.