Write the mass number of hydrogen.. Which group it is in....
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Answered by
1
hyy
mass number= 1.008
it is in first group.
valency = 1
it is a gas.
hope helped
mass number= 1.008
it is in first group.
valency = 1
it is a gas.
hope helped
Answered by
0
mass no of hydrogen is 1 and is preent in alkali metals group
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