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प्रश्न
Name the sub-atomic particles.
उत्तर
Proton, Electron, Neutrons.
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संबंधित प्रश्न
If bromine atom is available in the form of, say, two isotopes `""_35^79Br (49.7%)" and """_35^81Br (50.3%)`, calculate the average atomic mass of bromine atom.
Write the names of the elements present in the:-
Glucose
Write the names of `"Ca"("NO"_3)_2` compounds :
Define: Chemical bond
Name two particles found inside the nucleus. What are they collectively called ?
Define: Covalent bond
An atom has 13 protons and 14 neutrons.
What is the atomic number of the atom ?
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If an atom gains an electron, it is called an _______
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If an atom loses an electron, it acquires ______ a charge.
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An excess of electrons produces a ________ charge.
The electronic configuration of an element Z is 2, 8, 8.
(a) What is the atomic number of the element?
(b) State whether element Z is a metal or a non-metal.
(c) What type of ion (if any) will be formed by an atom of element Z? Why?
(d) What is special about the outermost electron shell of the atom of this element?
(e) Give the name and symbol of element Z.
(f) Name the group of elements to which Z belongs.
Which of the following statement is correct about the atom of an element ?
Give scientific reason.
All the mass of an atom is concentrated in the nucleus.
Define the following term:
Atom
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- Carbon atom
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Name the gas that.
Turns moist starch iodide paper blue black.
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will lose electron?
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will gain electron?
Draw the basic structure of an atom representing its –
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The smallest particle of matter that can exist by itself is ______.
State true or false. If false, correct the statement.
The basic unit of an element is molecule.
State true or false. If false, correct the statement.
An atom is electrically neutral.
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Draw the structure of an atom and explain the position of the sub-atomic particles.
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 smallest unit of an element is ______.
