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प्रश्न
Write the names of the elements present in the:-
Glucose
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उत्तर
Glucose : Carbon, hydrogen, oxygen.
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संबंधित प्रश्न
TRUE \ FALSE
Elements combine in definite proportions to form compounds.
What are orbits or shells ?
State Dalton’s atomic theory.
Define: An Atom:
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is such a particle called ?
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 ?
Fill in the blank
A charged particle is called an _____
Name the three subatomic particles present in an atom.
Name the unit in which the radius of an atom is usually expressed.
Is it possible to see atoms these days ? Explain your answer.
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.
How many atoms are there in exactly 12 g of carbon-12 element ? (C = 12 u)
A compound containing one atom of carbon and two atoms of oxygen is ______.
Define the following term with an example.
Element
Assertion: An atom is electrically neutral.
Reason: Atoms have equal number of protons and electrons.
Define – Atom.
Define the following term with an example.
Metalloid
1 mole of Gold and Silver contain same number of atoms.
The graphite refill used is pencil is made of element called ______.
