the number of electrons and neutrons of an
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
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the number of electrons in 4019 k -1 is1 19 2 20 318 440ans
softening hard water by boiling temporary hardness can be removed from water by boiling shake a little temporary hard water with a few drops of soap
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the number of electrons and neutrons of an element is 18 and 20 respectively its mass number is1 17 2
explain thermoplastic materialsthermoplastic materials the properties of such plastic materials do not change considerably when they are melted and
explain thermosetting plastic materialsthermosetting plastic materials they undergo huge changes while subjected to high temperatures for rather
number of protons neutrons and electrons in the element 23189 y is1 89 231 89 2 89 89 242 3 89 142 89 4
larry spends 34 hour twice a day walking and playing with his dog he also spends 16 hour twice a day feeding his dog how much time does larry spend
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