Chemistry-Periodic Table
NEET Chemistry Periodic Table MCQ Question
Type: MCQ-conceptual-Easy-Class 11
Which of the following statements about the periodic table is correct?
A
Electronegativity generally increases across a period from left to right.
B
Mendeleev arranged elements based on their increasing atomic numbers.
C
The 5th period of the periodic table contains 16 elements.
D
Elements in the same group have different properties.
Correct Answer
Option A
Detailed Explanation
Electronegativity does increase across a period from left to right, as stated in the context. Mendeleev arranged elements by atomic weights, not atomic numbers, and the 5th period contains 18 elements, not 16. Elements in the same group generally have similar properties.
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