An element X is forming acidic oxide. Its most probable position in the modern periodic table is(A) Group 1 and Period 3 (B) Group 16 and Period 3 (C) Group 17 and Period 3 (D) Group 2 and Period 3

Academic Chemistry NCERT Class 10

Correct Answer: (C) Group 17 and Period 3

Explanation: Acidic nature of the oxides of elements increases across a period. This means that the element at the rightmost position in a period will have the most acidic oxide.

Tutorialspoint

e

Updated on: 10-Oct-2022

58 Views

An element ‘X’ is forming an acidic oxide. Its position in modern periodic table will be(a) Group 1 and Period 3 (b) Group 2 and Period 3(c) Group 13 and Period 3 (d) Group 16 and Period 3
On the basis of the electronic configuration of 95X, the group number and period of the element ‘X’ is :(a) Group 15 period 2 (b) Group 13 period 2(c) Group 9 period 5 (d) Group 13 period 5
What is the atomic number of element of period 3 and group 17 of the Periodic Table?1041721
Name the element which is in:(a) First group and third period.(b) Seventeenth group and second period.
The electronic configuration of an element is 2, 8, 4. State its:(a) group and period in the Modern Periodic Table.(b) name and write its one physical property.
An element 'A' belongs to the third period and group 16 of the Periodic Table. Find out the valency of A.Valency 6Valency 2Valency 1Valency 3
(a) What is meant by (i) a group, and (ii) a period, in a periodic table?(b) How many periods and groups are there in the long form of periodic table? (c) Give two examples each of (i) group 1 elements (ii) group 17 elements (iii) group 18 elements.
An element X forms an oxide X2O3. In which group of Mendeleev's periodic table is this element placed?(a) group II (b) group III (c) group V (d) group VIII
Carbon belongs to the second period and Group 14. Silicon belongs to the third period and Group 14. If atomic number of carbon is 6, the atomic number of silicon is7142416
An element X belongs to the 3rd period and group 2 of the periodic table. State:(a) number of valence electrons (b) valency (c) metal or non-metal (d) name of the element
(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.
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
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)
Define atomic size. Give its unit of measurement. In the modem periodic table what trend is observed in the atomic radius in a group and a period and why is it so?
(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.

Kickstart Your Career

Get certified by completing the course

Get Started

Advertisements