Zadanie 1a
(i) Magnesium burns in oxygen according to the equation . Explain, using electron configurations, how ions are formed by magnesium and oxygen and how these ions form a compound. (ii) Explain, using electron configurations, why…
Cations, anions and ion charges
Explain that metals lose electrons to form cations and non-metals gain electrons to form anions, and predict the charge of a monatomic ion from the electron configuration of its atom and the noble gas configuration it reaches.
Tę umiejętność sprawdza 11 zadań wzorowanych na arkuszach IB z lat 2022–2026.
Zadania sprawdzające tę umiejętność: 11 Otwórz w wyszukiwarce z filtrami
Zadanie 6
Which compounds contain ionic bonds? I. SiO2 II. CH3COONa III. MgO A. I and II only B. I and III only C. II and III only D. I, II and III
Zadanie 6
Chrome alum has the formula KCr(SO4)2 ⋅ 12 H2O. Which option shows the charges of the ions that make up this salt, in the order potassium, chromium, sulfate? A. K+, Cr2+, SO42− B. K+, Cr3+, SO43− C.…
Zadanie 10
What is the formula of the compound formed from calcium ions and phosphate ions? A. CaPO4 B. Ca3(PO4)2 C. Ca2(PO4)3 D. Ca3PO4
Zadanie 13
Why do halogens form 1− ions? A. Highly exothermic electron affinity, so the atoms gain one electron B. Low ionization energy, so the atoms lose one electron C. High ionization energy, so the atoms gain one electron D. Low electronegativity, so the atoms gain…
Zadanie 6
What is the charge of the monatomic ion usually formed by the element with the following electron configuration? [Ne] 3s2 3p4 A. 2+ B. 2− C. 4+ D. 6+
Zadanie 7
Which row shows the correct formula of aluminium sulfide and the electron configuration of each species in it? A. Al3S2; Al species [Ne]; S species [Ar] B. Al2S3; Al species [Ne] 3s2 3p1; S species [Ne] 3s2 3p4 C. Al2S3; Al…
Zadanie 6
What is the formula of the compound formed between aluminium ions and sulfate ions? A. AlSO4 B. Al2(SO4)3 C. Al(SO4)3 D. Al3(SO4)2
Zadanie 9
An element has the electron configuration 1s2 2s2 2p6 3s2 3p4. How many electrons are gained or lost when an atom of this element forms an ionic bond? A. Four electrons lost B. Two electrons lost C. Four electrons gained D. Two electrons gained
Zadanie 10
The formula for yttrium nitrate is Y(NO3)3. What is the formula for yttrium oxide? A. Y2O3 B. YO C. YO3 D. Y3O2
Zadanie 1g
State the type of bonding in calcium, nitrogen and calcium nitride, and how the valence electrons produce each type of bonding.