Atomic Structur...

Which of the following substances consists of atoms of same type?

Mass number is the sum of ________ and ________ present in an atom.

Number of atoms present in the molecule of an element is known as ________ of an element.

Which of the following is a substance which is made up of atoms of two or more than two different types of elements, when combined together chemically?

Which of the following is a molecule of an element?

Components of which of the following can be separated most easily?

Which of the following particles are present inside the nucleus of an atom?

(i) Protons
(ii) Neutrons
(iii) Electrons

Under which of the following categories would you classify metalloids?

In nitrogen atom seven electrons are present. What is the atomic number of nitrogen?

In which of the following elements, atoms exist independently?

Which of the following elements has the maximum atomicity?

Which of the following statements is not true with regard to matter?

The atomic number of an element is 11 and its mass number is 23. How many neutrons are present in the atom?

Which of the following statements is true regarding the sub atomic particles of matter?

Radius of hydrogen atom is of the order of _______ .

Which of the following pairs forms an electrically neutral atom?

Atomic number of Cl is 17. How many protons are present in it?

Isotopes of an element differ in the number of

Tritium is the isotope of H with number of neutrons, electrons & protons equal to _____ respectively.

Charge on phosphate ion is