Answer:
NaH one atom of sodium react with one hydrogen to form sodium hydride
Explanation:
Answer:
True
Explanation:
Electrons that are in the first energy level (energy level 1) are closest to the nucleus and will have the lowest energy. Electrons further away from the nucleus will have higher energy. An atom's electron shell can accommodate 2n2 electrons, where n is the energy level.
Answer:
D. Cr
Explanation:
In order to determine which atom has at least one electron in its d orbital, we have to write their theoretical electron configurations.
- ₁₉K 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹
- ₂₄Cr 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁴
Cr has 4 electrons in d orbitals. Cr belongs to the d-block in the periodic table.
Answer:

Explanation:
Hello,
In this case, the undergoing chemical reaction is:

Thus, since the potassium bromide and silver nitrate are in a 1:1 mole ratio, the first step is to identify the limiting reactant, by considering the reacting volumes of reactants in order to compute the available moles of potassium bromide and the moles of potassium bromide consumed by the 15.4 mL of 0.512-M solution of silver nitrate:

In such a way, since less moles are consumed than available, we infer that silver nitrate is the limiting reactant, for which the resulting grams of silver bromide (molar mass 187.8 g/mol) result:

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