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3 years ago

Element X reacts to form XO. It has the second smallest radius of its group. What is element X?

Chemistry

1 answer:

andriy [413]3 years ago

8 0

Answer:

Explanation:

Is the element of the first group and is the second smallest of its group. Even Magnesium is in the same situation, but if you compare the atomic radius of lithium and magnesium, the first one is smaller.

Barium definitely is incorrect because is the one that has the biggest radius of its group.

Beryllium is the first of its group so it can not fit the description.

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Electronegativities of the elements Be, Mg, Ca, and Sr follow a specific trend within their group. Based on this trend, the atom

Travka [436]

Answer:

Explanation:

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When lithium reacts with bromine to form the compound LiBr, each lithium atom:

yKpoI14uk [10]

(3) loses one electron and becomes positively charged
Lithium has one valence electron and Bromine has seven. Therefore Lithium will give up its one to Bromine for both to have an octet

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Use the IUPAC nomenclature rules to give the name for this compound - N2O3.

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The answer to your question is,

D) Dinitrogen trioxide

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Ammonium iodide dissociates reversibly to ammonia and hydrogen iodide. NH4I (s) ⇌ NH3 (g) + HI (g) At 400 ºC, Kp = 0.215. Calcul

ollegr [7]

<u>Answer:</u> The partial pressure of ammonia is 0.464 atm

<u>Explanation:</u>

For the given chemical equation:

$NH_4I(s)\rightleftharpoons NH_3(g)+HI(g)$

Initial: 1

At eqllm: 1-x x x

The expression for $K_p$ for the following equation is:

$K_p=p_{NH_3}\times p_{HI}$

The partial pressures of solids and liquids are taken as 1 in the equilibrium expression.

We are given:

$K_p=0.215$

Putting values in above equation, we get:

$0.215=x\times x\\\\x=0.464atm$

Hence, the partial pressure of ammonia is 0.464 atm

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3 years ago

Need help with science pls help me

hoa [83]

Answer:

B. negative charge only

Explanation:

The saying "opposites attract" is true in the case. Since the rod is positively charged, the sphere must have a negative charge to be attracted to it.

A sphere that is positively charged would be repelled from the rod, and a neutral sphere would not be attracted or repelled.

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3 years ago