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When α -particles are sent through a thin metal foil, most of them go straight through the foil because (one or more are correct):
(1) Alpha particles are much heavier than electrons
(2) Alpha particles are positively charged
(3) Most part of the atom is empty space
(4)Alpha particles move with high velocity
Ans: Most part of the atom is empty space
The shape of 2p orbital is ; (1) Spherical (2) Ellipsoidal (3) Dumb-bell (4)Pyramidal ans: Dumb-bell
Electronic displacement in covalent bonds It is examined that most of the attacking reagents all time possess either a positive or a negetive charge, hence for a solution to op
calculate the electrode potential of a platinum electrode immersed in a solution containing Ce4 + ions (cCe4 + = 0.05M) and Ce3 + ions (cCe3 + = 0.1M)
i want some 25 exampels of nomenculature of complex coordination compounds
Describe the mechanism of ferromagnetism Ferromagnetism is the basic mechanism by which certain materials (like iron) form permanent magnets or/and exhibit strong interactions
Write a list of reduction half reactions for... Fe, Fe+3 Cu, Cu+1 Pb, Pb+2
Classification of polymers Classification lies on source of availability: They are categorized as (a) Natural polymers (b) Synthetic polymers
When an electron drops from a higher energy level to a low energy level, then: (1) Atomic number decreases (2) Energy is absorbed (3) Atomic number increases (4) Energ
The atomic orbitals are progressively filled in order of increasing energy. This principle is called as: (1) Hund's rule (2)Aufbau principle (3) Exclusion principle (4
What is electromagnetism
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