Chemistry

The number of electrons in the p-orbital of a Nitrogen atom (At. No. 7) is:

Identify the non-metal that is solid at room temperature and has a shiny appearance like metals.

In the modern periodic table, properties of elements are periodic functions of their:

Which element has the highest valency among the following?

What is the Latin name for Antimony?

Which element is the most abundant in the Earth's crust?

How many elements are present in the 4th period of the modern periodic table?

Which element has the electron configuration $1s^2 2s^2 2p^6 3s^1$?

Isotopes of which element are used in the treatment of cancer?

Which of these is the correct order of electronegativity?

What is the total number of orbitals in the n=3 shell?

The element with the configuration $1s^2 2s^2 2p^6 3s^2 3p^6$ is an:

Which of the following elements is a p-block element?

What is the valency of Phosphorus?

The lanthanides and actinides are also known as:

Which element has 18 neutrons and 17 protons?

Which of the following ions is isoelectronic with Neon?

The first element of the rare earth series is:

Which element has a greater atomic radius than Nitrogen?