The correct orders among the following are:

Atomic radius:

Electronegativity:

Density:

1st Ionisation Energy:

Choose the correct answer from the options given below:

Question

The correct orders among the following are:

Atomic radius:

Electronegativity:

Density:

1st Ionisation Energy:

Choose the correct answer from the options given below:

Canvas Classes · Accepted Answer

Strategy:
 Apply known Group 13 (B, Al, Ga, In, Tl) anomalies caused by -block and -block shielding.

Step 1: Check statements
- (A) Atomic Radius:  (because ). The question suggests  is correct on some broader scales, but let's check others.
- (B) Electronegativity: Decreases down to , then increases slightly. . (True)
- (D) : Anomaly order  is accurate. Values: . (True)

Both B and D are highly characteristic correct trends.

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