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Periodic classification 1

Quiz by REENA GOYAL

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Q 1/5
Score 0
an element which is an essential constituent of all organic compounds belongs to
29
group 1
group 14
group13
group 17

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5 questions

Show answers

Q1
an element which is an essential constituent of all organic compounds belongs to
group 1
group 14
group13
group 17
30s
Q2
Which of the following gives the correct increasing order of the atomic radii of O, F and N ?
F, O, N
N, F, O
O, F, N
O, N, F
30s
Q3
Which among the following elements has the largest atomic radii?
Ca
Na
Mg
K
30s
Q4
Electronegativity increases down a group.
false
true
True or False
30s
Q5
Chemical reactivity of metals decreases across a period.
true
false
True or False
30s

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