Which one of the following does not increase while moving down the group of the periodic table?
Atomic radius
Metallic character
Valence electrons
Number of shells in an element

Academic Chemistry NCERT Class 10

Correct answer: (c) valence electrons.

Explanation: The number of valence electrons does not increase while moving down the group in the periodic table.

Tutorialspoint

e

Updated on: 10-Oct-2022

281 Views

How does the valency of elements vary in going down a group of the periodic table?
(a) How does the chemical reactivity of alkali metals vary on going down in group 1 of the periodic table?(b) How does the chemical reactivity of the halogens vary on going down in group 17 of the periodic table?
What is the atomic number of element of period 3 and group 17 of the Periodic Table?1041721
Which of the following statement is correct in regard to the classification of elements ?(a) Elements in the periodic table are arranged on the basis of increasing atomic masses (b) Elements in Mendeleev’s periodic table are arranged on the basis of increasing atomic numbers (c) In modern periodic table, the element nickel of lower atomic mass is kept before the element cobalt of higher atomic mass (d) In modern periodic table, the isotopes of chlorine having diffrenet atomic masses are kept in the same group.
(a) How does the electropositive character of elements change on going down in a group of the periodic table?(b) State how the valency of elements varies (i) in a group, and (ii) in a period, of the periodic table.
(a) What is a group in the periodic table? In which part of a group would you separately expect the elements to have (i) the greatest metallic character (ii) the largest atomic size?(b) In what respects do the properties of group 1 elements differ from those of group 17 elements? Explain with examples by taking one element from each group. (c) From the standpoint of atomic structure, what determines which element will be the first and which the last in a period of the periodic table? (d) Explain why, the properties of elements are repeated after 2, 8, 18, and 32 elements in the periodic table. (e) What are the advantages of the periodic table?
(a) Electropositive nature of the element(s) increases down the group and decreases across the period(b) Electronegativity of the element decreases down the group and increases across the period(c) Atomic size increases down the group and decreases across a period (left to right)(d) Metallic character increases down the group and decreases across a period.Based on the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9.(a) Name the most electropositive element among them(b) Name the most electronegative element(c) Name the element with the smallest atomic size(d) Name the element which is a metalloid(e) Name the element which shows maximum valency.
Carbon, Group (14) element in the Periodic Table, is known to form compounds with many elements. Write an example of a compound formed with(a) chlorine (Group 17 of Periodic Table)(b) oxygen (Group 16 of Periodic Table)
(a) How does the tendency to lose electrons change as we go down in group 1 of the periodic table? Why does it change this way?(b) How does the tendency to gain electrons change as we go down in group 17 of the periodic table? Why does it change this way?
State whether the following statement is true or false:On-going down in a group of the periodic table, the number of valence electrons increases.
What happens to the metallic character of the elements as we go down in a group of the periodic table?
Halogens belong to group ____________ of the Periodic Table.
Which one of the following statements is not correct about the trends in the properties of the elements of a group on going down in a group?The chemical reactivity of metals increases.The metallic character of elements increases.The size of the atom increases.The valence electrons increase
Taking the example of an element of atomic number 16, explain how the electronic configuration of the atom of an element relates to its position in the modern periodic table and how the valency of an element is calculated on the basis of its atomic number.
An element X has mass number 40 and contains 21 neutrons in its atom. To which group of the Periodic Table does it belong?Group 1Group 4Group 2Group 3

Kickstart Your Career

Get certified by completing the course

Get Started

Advertisements