Atomic Structures Test

Result

Atomic Structures Test - 2

Score
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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
1 / -0

A sodium cation has different number of electrons from

A
O^2-

B
F^-

C
Li⁺

D
Al⁺³

Solution

Na⁺ has 10 electron and Li⁺ has 2 electron so these are different number of electron from each other
Question 2
1 / -0

An atom which has lost one electron would be

A
Negatively charged

B
Positively charged

C
Electrically neutral

D
Carry double positive charge
Question 3
1 / -0

Number of electrons in the outermost orbit of the element of atomic number 15 is

A
1

B
3

C
5

D
7

Solution

P¹⁵ = 2, 8, 5
Question 4
1 / -0

The atomic weight of an element is double its atomic number. If there are four electrons in 2P orbital, the element is

A
C

B
N

C
O

D
Ca

Solution

₈O = 1s²s²2P⁴