How are elements arranged in the modern periodic table?
Question 3
Which element is placed in the same group as magnesium?
Question 4
What is the valency of an element in Group 17 of the periodic table?
Question 5
What is the electronic configuration of oxygen?
Question 6
Which of the following is a halogen?
Question 7
What is the symbol for the element with atomic number 79?
Question 8
Which element is a noble gas?
Question 9
What is the atomic number of carbon?
Question 10
What is the modern periodic law?
Question 11
What is the trend in the reactivity of alkali metals down the group?
Question 12
Which of the following is a metalloid?
Question 13
Which element is placed in the same period as fluorine?
Question 14
What is the chemical symbol for potassium?
Question 15
What is the common name for the element with atomic number 50?
Question 16
What is the trend in electronegativity across a period?
Question 17
Which of the following elements has the highest electronegativity?
Question 18
What is the trend in atomic size down a group?
Question 19
Which of the following elements has the smallest atomic size?
Question 20
What is the chemical symbol for silver?
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