Assertion (A) Elementary phosphorus exists in three principal allotropic forms, i.e. white (or yellow), red (or violet) and black. Reason (R) Of the three forms, white phosphorus is the most important and most reactive.

Question

Assertion (A) Elementary phosphorus exists in three principal allotropic forms, i.e. white (or yellow), red (or violet) and black. Reason (R) Of the three forms, white phosphorus is the most important and most reactive. (A) If both Assertion and Reason are true and Reason is correct explanation of Assertion. (B) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion. (C) If Assertion is true but Reason is false. (D) If both Assertion and Reason are false.

Tardigrade Admin · Accepted Answer

Elementary phosphorus exists in three principal allotropic forms known as white (or yellow), red (or violet) and black phosphorus. Of the three forms, white phosphorus is the most important and most reactive.

Q. Assertion (A) Elementary phosphorus exists in three principal allotropic forms, i.e. white (or yellow), red (or violet) and black. Reason (R) Of the three forms, white phosphorus is the most important and most reactive.

If both Assertion and Reason are true and Reason is correct explanation of Assertion.

If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

If Assertion is true but Reason is false.

If both Assertion and Reason are false.

Elementary phosphorus exists in three principal allotropic forms known as white (or yellow), red (or violet) and black phosphorus. Of the three forms, white phosphorus is the most important and most reactive.

Q. Assertion $(A)$ Elementary phosphorus exists in three principal allotropic forms, i.e. white (or yellow), red (or violet) and black.
Reason $(R)$ Of the three forms, white phosphorus is the most important and most reactive.