Podcast
Questions and Answers
Qual de iste elementes ha un numero atomic de 11?
Qual de iste elementes ha un numero atomic de 11?
- Sodium (Na) (correct)
- Potassium (K)
- Magnesium (Mg)
- Aluminium (Al)
Qual elemento ha un peso atomic de 24?
Qual elemento ha un peso atomic de 24?
- Fluorine (F)
- Aluminium (Al)
- Sodium (Na)
- Magnesium (Mg) (correct)
Qual de iste elementes ha un numero atomic superiour a 20?
Qual de iste elementes ha un numero atomic superiour a 20?
- Fluorine (F)
- Oxygen (O)
- Neon (Ne) (correct)
- Helium (He)
Qual de iste elementos ha un peso atomic de 32?
Qual de iste elementos ha un peso atomic de 32?
Flashcards
Hydrogen (H)
Hydrogen (H)
Hydrogen es le elemento le plus leve e abundant in le universo. Illo ha un sol protone e un sol electrone.
Helio (He)
Helio (He)
Helio es un gas noble e incolor que es le secunde elemento le plus abundant in le universo. Illo es usate in globos e in imager de resonantia magnetic.
Lithium (Li)
Lithium (Li)
Lithium es un metallo leve e blan que es usate in baterias e antidepressivos. Illo ha tres protones.
Beryllium (Be)
Beryllium (Be)
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Boron (B)
Boron (B)
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Study Notes
Atomic Masses of the First Twenty Elements
- Hydrogen (H) atomic mass is 1
- Helium (He) atomic mass is 4
- Lithium (Li) atomic mass is 7
- Beryllium (Be) atomic mass is 9
- Boron (B) atomic mass is 11
- Carbon (C) atomic mass is 12
- Nitrogen (N) atomic mass is 14
- Oxygen (O) atomic mass is 16
- Fluorine (F) atomic mass is 19
- Neon (Ne) atomic mass is 20
- Sodium (Na) atomic mass is 23
- Magnesium (Mg) atomic mass is 24
- Aluminium (Al) atomic mass is 27
- Silicon (Si) atomic mass is 28
- Phosphorus (P) atomic mass is 31
- Sulfur (S) atomic mass is 32
- Chlorine (Cl) atomic mass is 35
- Argon (Ar) atomic mass is 40
- Potassium (K) atomic mass is 39
- Calcium (Ca) atomic mass is 40
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