EASY
KEAM
IMPORTANT
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The effective nuclear charge of an element with three valence electrons is 2.60 . What is the atomic number of the element?

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Important Questions on Classification of Elements and Periodicity in Properties

EASY
KEAM
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 3 - Classification of Elements and Periodicity in Properties>KEAM 2018>Q 5
Which element has the highest first ionization potential?
MEDIUM
KEAM
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 3 - Classification of Elements and Periodicity in Properties>KEAM 2018>Q 6
The electronegativities of N, C, Si and P are in the order -