50 ELEMENTS

Which element has the atomic number 15

• Sulfur
• Silicon
• Chlorine
• Phosphorus

What is the symbol for the element with atomic number 22

• Ni
• Ca
• Fe
• Ti

Which element is represented by the symbol ‘K’

• Potassium
• Sodium
• Calcium
• Magnesium

Which element has the highest atomic mass among the first 50 elements

• Lead (Pb)
• Mercury (Hg)
• Gold (Au)
• Bismuth (Bi)

What is the atomic number of Zinc?

• 25
• 30
• 20
• 35

Which element is in Group 2 and Period 4

• Barium
• Magnesium
• Strontium
• Calcium

Which element has the symbol ‘Ar

• Argon
• Arsenic
• Aluminum
• Argentum

What is the electron configuration of Neon

• 1s² 2s² 2p⁶
• 1s² 2s² 2p⁴
• 1s² 2s² 2p⁶ 3s²
• 1s² 2s² 2p⁵

Which element is a metalloid

• Gold
• Copper
• Silicon
• Iron

Which element has the atomic number 47

• Gold
• Silver
• Copper
• Platinum