#1
Which element has the atomic number 1?
3 answered
#2
What is the most abundant element in the Earth's crust?
2 answered
#3
Which group of elements is known as the 'noble gases'?
2 answered
#4
What is the chemical symbol for gold?
2 answered
#5
Which element is commonly used in semiconductor devices?
1 answered
#6
Which group of elements is known for their reactivity and tendency to form salts?
1 answered
#7
Who proposed the modern periodic table?
2 answered
#8
Which of the following elements has the highest electronegativity?
1 answered
#9
Which subatomic particle is responsible for the atomic mass of an element?
1 answered
#10
Which element has the highest melting point?
1 answered
#11
What is the lightest element in the periodic table?
1 answered
#12
Which element is used as a moderator in nuclear reactors?
1 answered
#13
What is the atomic number of Uranium?
1 answered
#14
Who discovered the electron?
1 answered
#15
What is the chemical symbol for lead?
1 answered
#16
What is the chemical symbol for mercury?
1 answered
#17
What is the chemical symbol for tungsten?
1 answered