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10All objects around us, like books and bags, have mass and volume.
Light, heat, and shadow have mass and volume.
Matter is made up of atoms.
Elements and compounds are impure substances.
The central part of an atom is called the nucleus.
Electrons revolve around the nucleus in fixed paths called shells or orbits.
Neutrons have a positive charge.
The mass of an electron is equal to the mass of a proton.
K shell can hold a maximum of 2 electrons according to Bohr’s 2n² rule.
Atoms of different elements have the same structure and properties.
Percentage: 0%
. What is the symbol of the element given in the figure?
Which of the following is the class of negatively charged subatomic particles of an atom?
What are the subatomic particles present in the nucleus of an atom?
The smallest particle of an element that can take part in chemical reactions is called:
Which particle revolves around the nucleus?
Which element has 2 protons, 2 neutrons, and 2 electrons?
The number of neutrons in Argon is:
Which element has 2 protons, 2 neutrons, and 2 electrons?
An atom of nitrogen has how many electrons?
According to Bohr and Bury's 2n² rule, the L shell can hold maximum:
All objects which have mass and volume are called ______.
The central part of an atom is called ______.
Proton is denoted by ______+.
Neutron is denoted by ______°.
Electron is denoted by ______-.
Mass of an electron = ______/1837 amu.
K shell is the ______ shell of an atom.
Subatomic particles in the nucleus are ______ and neutron.
L, M, N shells are also called ______ levels.
According to Bohr’s 2n² rule, the maximum electrons in a shell = ______².