Periodic Classification Of Elements — Part 2 MCQs with Explanations

Mendeleev's Periodic Law is the correct answer to “Fill in the blank with the correct option: "The properties of elements are the periodic functions of their atomic masses". This is the statement of . . . . . . . .”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

Pt is the correct answer to “Dobereiner made the first observation of . . . . . . . . as a catalyst.”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

electronegativity is the correct answer to “What is the relative tendency of an atom to attract electrons towards another element when it is bound to the atom”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

F and Cl is the correct answer to “The atomic numbers of the four elements are as follows: F(9), P(15), Cl(17), Ar (18). Which of the following two elements will be chemically similar”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

3rd is the correct answer to “An element of atomic number 16 is present in the periodic table . . . . . . . . period”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

33 is the correct answer to “The atomic number of N is 7, then the atomic number of the third element of the nitrogen group is:”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

Rubidium is the correct answer to “Very metallic element in the fifth period . . . . . . . . is”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

in the left-hand columns is the correct answer to “In Periodic Table, metallic elements appear”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

Sodium to chlorine is the correct answer to “Non-metallic properties increase-”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

Atomic Number is the correct answer to “The Modern Periodic Table is based on . . . . . . . . of the elements.”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

Number of valence electrons is the correct answer to “All the elements in the same group of the periodic table have same . . . . . . . .”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

18 is the correct answer to “An element with electronic configuration 2, 8, 8, belongs to . . . . . . . . group in the modern periodic table”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

Cl is the correct answer to “Which of the following elements is more electronegative”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

13 is the correct answer to “The electronic configuration of an element is 2, 8, 3. this . . . . . . . . Belongs to the group.”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

Be > Mg > Ca is the correct answer to “The group that shows the correct order of the first ionisation potential is:”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

Potassium is the correct answer to “Which of the following is the third member of the Dobereiner's triad, which also includes lithium and sodium”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

18 is the correct answer to “Which group of modern periodic table contains complete valence shells and chemically inert elements”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

Lanthanoids is the correct answer to “In the modern periodic table, elements with atomic numbers 58 to 71 are called-”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

Na is the correct answer to “Which of the following elements has maximum atomic radius”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

Radioactivity is the correct answer to “Which one of the following is not a periodic property i.e., does not show any trend on moving from one side to the other in the Periodic Table”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

Period is the correct answer to “What are the horizontal rows in a periodic table called”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

Both A and C is the correct answer to “Which of the following types of elements show variable valency”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

actinide is the correct answer to “Californium is a member of the . . . . . . . . group.”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

The metallic property decreases in the period from left to right but increases from top to bottom in the group is the correct answer to “How does the metallic property of an element change in the modern periodic table”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

calcium is the correct answer to “The rule of octaves was applicable only till . . . . . . . .”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

Dobereiner's law of triads is the correct answer to “When the elements are arranged in increasing order of atomic weights, the atomic weight of the middle element is approximately the average of the atomic weights of the other two elements' - this rule is known as-”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

18 is the correct answer to “Which groups of the modern periodic table consists of a full-covering valence electron and chemically inert elements”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

Metallic properties is the correct answer to “Which of the following always increase while moving from top to bottom in a group”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

J.W. Dobereiner is the correct answer to “The Law of Triad was given by”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

argon is the correct answer to “Name the Noble gas placed in the third period and eighteen group of modern periodic table-”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

Terbium is the correct answer to “. . . . . . . . is not an actinoid”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

third is the correct answer to “Na, Mg, Al, Si, P, S, Cl and Ar are related to . . . . . . . . period of modern periodic table.”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

56 is the correct answer to “Newland considered that only . . . . . . . . elements were present in nature”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

2, 4 is the correct answer to “What will be the electronic configuration of an element related to the second period and having strong chaining properties”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

37, 19, 3, 55 is the correct answer to “Which of the following groups of atomic numbers are groups of alkaline metals”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

Period 3 group 17 is the correct answer to “The atomic number of an element is 17. What is its place in the modern periodic table”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

fluorine is the correct answer to “Which of the following elements has the highest electronegativity”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

18, 7 is the correct answer to “According to IUPAC, total number of groups and periods in the periodic table respectively are”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

Potassium is the correct answer to “Which is the most reactive metal”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.

more than oxygen is the correct answer to “Ionization potential of nitrogen is . . . . . . . .”. This question is standard in competitive examination syllabi for Periodic Classification Of Elements.