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chemistry
chemistry

The electronic configuration of an element is 1s², 2s² 2p6, 3s² 3p³. What is the atomic number of the element which is just below the above element in the periodic table

The electronic configuration of an element is 1s², 2s² 2p6, 3s² 3p³. What is the atomic number of the element which is just below the above elemen…
chemistry

In the modern periodic table , the period indicates the value of:

In the modern periodic table , the period indicates the value of: A Atomic Number B Ato…
chemistry

Arrange S, O and Se in ascending order of electron affinity

Arrange S, O and Se in ascending order of electron affinity A Se < S < O B Se <…
chemistry

In the long form of the periodic table, the valence shell electronic configuration of 5s²5p4 corresponds to the element present in:

In the long form of the periodic table, the valence shell electronic configuration of 5s²5p4 corresponds to the element present in: …
chemistry

In the modern periodic table, the period indicates the value of:

In the modern periodic table, the period indicates the value of: A Atomic Number B Atomi…
chemistry

Which of the following oxides is amphoteric in character?

Which of the following oxides is amphoteric in character? A SnO2 B CO2 …