#1
Which element has the chemical symbol 'H'?
Hydrogen
ExplanationThe lightest element with atomic number 1.
#2
What is the atomic number of Carbon?
6
ExplanationCarbon's position in the periodic table.
#3
What is the chemical symbol for Gold?
Au
ExplanationDerived from the Latin word 'aurum'.
#4
Which element is essential for human bone health?
Calcium
ExplanationCritical for bone and teeth structure and function.
#5
What is the chemical symbol for Sodium?
Na
ExplanationDerived from the Latin word 'natrium'.
#6
Which element is the most abundant in Earth's crust?
Oxygen
ExplanationConstituting approximately 46.6% of the Earth's crust.
#7
What is the chemical symbol for Mercury?
Hg
ExplanationDerived from the Latin word 'hydrargyrum'.
#8
Which element is commonly used in batteries?
Lithium
ExplanationRechargeable lithium-ion batteries are ubiquitous in electronics.
#9
What is the lightest noble gas?
Helium
ExplanationAtomic number 2, extremely light and inert.
#10
Which element is commonly used as a semiconductor in electronics?
Silicon
ExplanationFundamental in the production of integrated circuits.
#11
Which element has the highest melting point?
Tungsten
ExplanationMelting point of 3422 °C, highest among all elements.
#12
Which element has the highest electronegativity?
Fluorine
ExplanationHighest electronegativity on the Pauling scale.