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प्रश्न
Name two particles found inside the nucleus. What are they collectively called ?
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उत्तर
Protons and Neutrons. Mass number.
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संबंधित प्रश्न
Write the names of the elements present in the:-
Glucose
Write the names of `"Na"_3"PO"_4` compounds :
An atom has 13 protons and 14 neutrons.
What is the atomic mass of the atom ?
Define: An Atom:
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the mass number of X?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
Does the particle have an excess of electrons or a deficiency of electrons ?
Name the unit in which the radius of an atom is usually expressed.
What value has been given to the mass of this reference atom ?
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will lose electron?
Select the correct answer to the statement given below:
The smallest particle of a substance – capable of independent existence and which retains the characteristics of the substance.
Rewrite the given sentence in correct form.
Elements contain two or more kind of atoms and compounds contain only one kind of atom.
Assertion: An atom is electrically neutral.
Reason: Atoms have equal number of protons and electrons.
Project.
To have an idea of what atoms are, students can be asked to construct atoms using pipe cleaners (thin metal wires-electron shells), pompoms (balls-different colours for protons and neutrons) and beads (electrons). Students will love and enjoy putting them together and they look great hanging from the ceiling in the classroom.
The volume occupied by 4.4 g of CO2 at S.T.P ______
Which of the following has maximum number of atoms?
The smallest unit of an element is ______.
An atom of Oxygen (O) and two atoms of hydrogen (H.) combine to form a molecule of ______.
The ______ are combination of atoms of various elements or the same element.
Atoms have a radius of the order ______.
