MCQs || B21

Which characteristics correctly describe a neutron

Which of the following represents a pair of isotopes?

An atom with Z = 35 and A = 80 contains ________ protons, ________ electrons, and ________ neutrons.

If Sulfur contained 90% Sulfur 32 and 10.0% Sulfur 34, its average atomic mass will be

Elements and their isotopes (like ¹⁶O, ¹⁷O, and ¹⁸O) have different

Arrange the following elements in the order of their increasing non-metallic character: Li, Be, C, O, F

Digestion of food

The mass of atom is concentrated inside the _______ of an atom.

Cereal

An atom as a whole is electrically neutral because the number of protons is equal to the number of electrons. Is the given statement true?

Example of a homogeneous mixture is :-

Which one of the following is not a heterogeneous mixture?

How many of the following are elements: Diamond, Graphite, silica, Alumina, sodium, and water

A mixture of mustard oil and water forms

Which of the following is made up of atoms of two different elements?

Each orbital …… has the shape of a spherical

Each orbital …….. has the shape of a dumbbell

‏Which of the following is in group 4

Which of the following is a halogen element ?