An element X from group 2 of the Periodic Table reacts with Y from group 17 to form a compound. Give the formula of the compound.
XY₂
XY
X₂Y
(XY)₂

Academic Chemistry NCERT Class 10

Correct Answer: (a) XY2

Explanation: As group 2 elements of the periodic table have valency +2, and group 17 elements have valency -1. Hence, the formula of the compound would be XY2.

Tutorialspoint

Updated on: 10-Oct-2022

93 Views

An element X from group 2 reacts with element Y from group 16 of the periodic table.(a) What is the formula of the compound formed?(b) What is the nature of bond in the compound formed?
An element X from group 2 of the periodic table reacts with an element Y from group 17 to form a compound.(a) What is the nature of the compound formed?(b) State whether the compound formed will conduct electricity or not.(c) Give the formula of the compound formed.(d) What is the valency of element X?(e) How many electrons are there in the outermost shell of an atom of element Y?
An element A from group 14 of the periodic table combines with an element B from group 16.(i) What type of chemical bond is formed?(ii) Give the formula of the compound formed.
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)
An element ‘X’ belong to 3rd period and group 13 of the Modern Periodic Table.(a) Determine the valence electrons and the valency of ‘X’.(b) Molecular formula of the compound formed when ‘X’ reacts with an element ‘Y’ (atomic number = 8).(c) Write the name and formula of the compound formed when ‘X’ combines with chlorine.
An element X (atomic number 17) reacts with an element Y (atomic number 20) to form a compound.(a) Write the position of these elements in the modern periodic table.(b) Write the formula of the compound formed. Justify your answer in each case.
An element X is in group 2 of the periodic table:(a) What will be the formula of its chloride? (b) What will be the formula of its oxide?
An element X with atomic number 12 forms a compound with element Y with atomic number 17. The formula of the compound formed is (A) XY (B) XY2 (C) X2Y (D) X2Y3
An element X combines with oxygen to form an oxide XO. This oxide is electrically conducting.(a) How many electrons would be there in the outermost shell of the element X?(b) To which group of the periodic tables does the element X belong?(c) Write the formula of the compound formed when X reacts with chlorine
An element X of valency 3 combines with another element Y of valency 2. What will be the formula of the compound formed?
What is the atomic number of element of period 3 and group 17 of the Periodic Table?1041721
Based on the group valency of elements write the molecular formula of the following compounds giving justification for each:(i) Oxide of first group elements.(ii) Halide of the elements of group thirteen, and(iii) Compound formed when an element, A of group 2 combines with an element, B of group seventeen.
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
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
An element ‘X’ with atomic number 11 forms a compound with element ‘Y’ with atomic number 8. The formula of the compound formed is(a) XY (b) X2Y(c) XY2 (d) X2Y3

Kickstart Your Career

Get certified by completing the course

Get Started

Advertisements