Chemistry
An element 13X combines with 17Y to form a compound. which of the following is true ?
P → X is a metal, Y is a metal.
Q → X is a metal, Y is a non-metal.
R → X losses electron(s), y gains electron(s).
- Only P
- Only Q
- Both P and Q
- Both Q and R
Answer
Both Q and R
Reason — Element X with an atomic number of 13 is Aluminium (Al), which is a metal. Element Y with an atomic number of 17 is Chlorine (Cl), which is a non-metal.
X being a metal tends to lose electrons to achieve a stable electron configuration and Y being a non-metal tends to gain electrons to achieve stable electron configuration. Hence, statements Q and R are true whereas statement P is false.
Related Questions
Which of these statements gives the correct picture regarding halogens and alkali metals with respect to an increase in the atomic number ?
- Reactivity decreases in alkali metals but increases in halogens.
- Reactivity increases in both.
- Reactivity decreases in both.
- Reactivity increases in alkali metals but decreases in halogens.
The correct order of increasing ionisation energy of Be, Mg, Ca, Sr is :
- Be, Mg, Ca, Sr
- Ca, Mg, Be, Sr
- Sr, Ca, Mg, Be
- Mg, Ca, Sr, Be
Assertion (A): Second period consists of 8 elements.
Reason (R): Number of elements in each period is four times the number of atomic orbitals available in energy level that is being filled.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): In a Dobereiner's triad, the three elements present have the same difference of atomic masses.
Reason (R): Elements in a triad have similar properties.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.