What is the atomic mass of sodium?

[SSC CHSL 2022]

What will be the atomic number of an element X which is placed in period 2 and group 17?

[SSC CGL 2023]

The most common isotopes used in a nuclear weapon are of:

[RRB NTPC CBT]

The elements that have intermediate properties between those of metals and non-metals are called metalloids. Which among the following is known as a metalloid?

[RRB NTPC CBT]

Identify the element that is NOT a metalloid.

[SSC GD 2022]

11 What is the atomic number of Nitrogen in the science periodic table?

[SSC MTS 2022]

How many protons are there in a lithium nucleus?

[SSC CGL 2021]

Identify the element that does NOT belong to Period 6 of Modern Periodic Table.

[SSC CGL 2023]

Which of the following elements is a versatile element that forms the basis for all living organisms and many of the things we use?

[RRB NTPC CBT]

Which one of the following is NOT an element?

[RRB NTPC CBT]

Which d-block element in the periodic table is represented by the Greek symbol 'alpha' and the metallic 'rays’ ?

[SSC CHSL 2023]

Which chemical element with atomic number 35 has a dark reddish-brown liquid with a burning pungent odour ?

[RRB NTPC CBT]

Being light and non- inflammable, ______ gas is used to blow balloons.

[RRB NTPC CBT]

Chaoite, Buckminsterfullerene and Graphene are related to which
element ?

[RRB NTPC CBT]

Nitrogen is a ______ element.

[SSC CGL 2021]

Which of the following is the lightest material on earth?

[RRB NTPC CBT]

Which allotrope of carbon was discovered by Robert F Curl, Harold W Kroto and Richard E Smalley in 1985?

[SSC CGL 2024]

Buckminsterfullerene is a nanoparticle characterised by spherical geometry and a hollow interior which contains how many carbon atoms?

[SSC CGL 2022]

Which of the following is an inert gas most commonly found in light bulbs?

[SSC CGL 2019]

Chaoite, Buckminsterfullerene and Graphene are related to which element ?

[SSC MTS 2023]

Which of the following gases emits red light when electricity is passed through it?

[SSC CGL 2024]

Fullerene is an allotropic form of:

[RRB NTPC CBT]

Name the only metal that is antibacterial.

[SSC CGL 2019]

Sodium is kept in which of the following?

[SSC GD 2022]

Which one of the following metals exists in the liquid state?

[RRB NTPC CBT]

Which s-block element is a silvery-white metal that is used in an alloy with copper or nickel to make gyroscopes, springs, electrical contacts, spot-welding electrodes, and non-sparking equipment ?

[SSC CHSL 2023]

What is the name of the seventh most abundant metal in the earth's crust, which is derived from the medieval Latin word 'Kalium' ?

[RRB NTPC CBT]

How many anions surround a sodium ion in a crystal lattice of sodium chloride?

[SSC CGL 2022]

The space-filling model emphasises the relative size of each atom based on its _______.

[SSC MTS 2024]

How many electrons does a hydrogen molecule have in its K shell ?

[SSC CPO 2024]

Which of the following is/are the physical properties of oxygen?

What is the primary reason for the anomalous behavior of lithium in comparison to other alkali metals?

What is the atomic number of Iron?

What is the atomic number of Argon?

Non-metals are found in which among the following blocks in the modern periodic table?

Which among the following Groups do not belong to the p-block of the periodic table?

Co belongs to which block in the periodic table?

Which element has the highest atomic number and highest atomic mass in the periodic table?

Non-metals are found in which among the following blocks in the modern periodic table?

Which of the following element is the most electronegative element?

Which one of the following is the Electron Configuration of Carbon?

Which element has the highest atomic number and highest atomic mass in the periodic table?

If the Atomic number of an element is 12, find out the block to which it belongs in the periodic table.

The Atomic Mass Number of Oxygen is 16, it is a whole number which is equal to the sum of what?

Which among the following is the atomic number of Helium?

Which of the following metals reacts explosively with cold water?

Which of the following elements is found in Group 17 (Halogens) of the Periodic Table?

The atomic number of the atom that becomes stable by gaining 3 electrons in the 5th shell is:

Which of the following is the most Electropositive Element?

Atomic number of a chemical element is equal to?