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Atoms and Periodic table
Atoms and Periodic table
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Recap on atoms and periodic table
Flashcards
18 cards
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Practice quiz
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Questions
18
Answers
1
Which of the following shows the correct electronic configuration of K
+
?
2. 8. 8. 1
2. 8. 8
2
2. 8
2
Which group does calcium (Ca) belong to?
IV
II
I
III
3
Which of the following shows the correct electronic configuration of Magnesium (Mg)?
2. 6
2. 8. 8
2. 8. 2
2. 8
4
Which period and group does Argon (Ar) belongs to?
Period 0 Group III
Period 3 Group 0
Period III Group 0
Period 0 Group 3
5
What does "period" in the periodic table represent?
The horizontal row
The vertical row
6
What is a proton?
Positively charged particle
Negatively charged particle
Neutrally charged particle
7
How many electons does sodium (Na) have?
11
12
23
8
Which group and period does chlorine (Cl) belongs to?
Group VII Period 3
Group III Period 1
Group I Period 2
Group V Period 3
9
Which period does Potassium (K) belongs to?
1
4
3
2
10
Which period does hydrogen (H) belongs to?
1
0
3
2
11
How many protons does Boron (B) have?
5
6
11
12
How many neutrons does fluorine (F) have?
19
9
10
13
Which of the following shows the correct electronic configuration of oxygen atom?
8
2, 4
2, 8
2, 6
14
Which period does phosphorus (P) belong to?
1
3
2
4
15
Which of the following shows the correct electronic configuration of N
3-
?
2. 8
2
2. 8. 8
2. 5
16
Why is atom neutrally charged?
It does not have any electrical charges
It has same number of electrons, protons and neutrons.
It only has neutrons
It has same number of electrons and protons
17
How many electrons does carbon ion (C
2-
) have?
8
12
6
18
How many electons does aluminium ion (Al
3+
) have?
14
10
13
