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प्रश्न
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form positive ion?
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उत्तर
X
APPEARS IN
संबंधित प्रश्न
TRUE \ FALSE
Cathode rays are a stream of fast moving particles that travel in random directions.
ANSWER IN DETAIL
Enlist the features of Bohr’s model of an atom. How did he correct the Rutherford’s model ?
Name two particles found inside the nucleus. What are they collectively called ?
Name the particle or particles you would expect to find in :
The orbit of an atom
An atom has 13 protons and 14 neutrons.
How many electrons would be present in this atom ?
An atom has 13 protons and 14 neutrons.
What is the atomic mass of the atom ?
Name the three subatomic particles present in an atom.
How many times is a proton heavier than an electron?
How many atoms are there in exactly 12 g of carbon-12 element ? (C = 12 u)
The electron shell ______ is nearest to the nucleus.
Compare:
Chlorine atom and chloride ion, with respect to
Atomic structure
Electrical state
Draw the diagrams representing the atomic structures of the following: Neon
State the meaning of the term – (a) atom, (b) molecule, (c) radical – with a suitable example.
The smaller particles found in the atom is called ______.
State true or false. If false, correct the statement.
An atom is electrically neutral.
Assertion: An atom is electrically neutral.
Reason: Atoms have equal number of protons and electrons.
1 mole of Gold and Silver contain same number of atoms.
Give the salient features of “Modern atomic theory”.
Which of the following has maximum number of atoms?
The smallest unit of an element is ______.
