periodic table, Chemistry

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Number of electrons and neutrons of an element & mass no, The number of ele...

The number of electrons and neutrons of an element is 18 and 20 respectively. Its mass number is: (1) 17              (2) 37        (3)2              (4)38 Ans: 17

Ans., Give the styx code of B4 H10 and which type of bond present in it?

Give the styx code of B4 H10 and which type of bond present in it?

What is thermal breakdown, What is Thermal breakdown It is because o...

What is Thermal breakdown It is because of the attainment of an excessive temperature in dielectric.  If  heat  dissipated  is  less  than  heat  generated,  there  is  a pr

Show reversible and exothermic reaction, Q. Show reversible and exothermic ...

Q. Show reversible and exothermic reaction? The fact that SO 2 , can be oxidised to SO 3 , by air in the presence of platinum catalyst is the basis of the contact process which

The wave number associated with this light, The frequency of a wave of ligh...

The frequency of a wave of light is 12x 10 14 s -1 .   The wave number associated with this light is: (1) 5x10 -7 m                        (2)  4x 10 -8 cm -1

Use the phase rule on system, Q. Consider a system containing only NH 4 Cl(...

Q. Consider a system containing only NH 4 Cl(s), NH 3 (g), and HCl(g). Assume that the equilibrium NH 4 Cl(s) ⇔ NH 3 (g), and HCl(g) exists. (a) Suppose you prepare the system b

Detemine energy of atomic orbitals, Energy of atomic orbitals in a particul...

Energy of atomic orbitals in a particular shell is in the order: (1) s (2) s> p > d > f        (3) p (4)  f > d > s >p Ans:  s

IInorganic chemistry, Why magnesium does not impart any colour to Bunsen fl...

Why magnesium does not impart any colour to Bunsen flame while calcium does

Chemical reactions, how do I come up with a chemical reaction problem for t...

how do I come up with a chemical reaction problem for the human body

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