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3 years ago

PLZ HELP

Chemistry

1 answer:

rodikova [14]3 years ago

4 0

Answer:

Observe: To model how hydrogen and oxygen react to make water, type “H2+O2” into the Reactants box and “H2O” into the Products box.

As the equation is written, which element is not in balanced?

oxygen isn't balanced...

Explanation:

in reactants there is 2hydrogens and 2 oxygen

but in product there is balanced no if hydrogen bt there is only one no of oxygen

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Write the charge and full ground-state electron configuration of the monatomic ion most likely to be formed by each:

Sladkaya [172]

Answer:

Part A:

Charge is $P^{3-}$

Configuration is $1s^2 2s^22p^63s^23p^6$

Part B:

Charge is $Mg^{2+}$

Configuration is $1s^2 2s^22p^6$

Part C:

Charge is $Se^{2-}$

Configuration is $1s^2 2s^22p^63s^23p^64s^23d^{10}4p^6$

Explanation:

Monatomic ions:

These ions consist of only one atom. If they have more than one atom then they are poly atomic ions.

Examples of Mono Atomic ions: $Na^+, Cl^-, Ca^2^+$

Part A:

For P:

Phosphorous (P) has 15 electrons so it require 3 more electrons to stabilize itself.

Charge is $P^{3-}$

Full ground-state electron configuration of the mono atomic ion:

$1s^2 2s^22p^63s^23p^6$

Part B:

For Mg:

Magnesium (Mg) has 12 electrons so it requires 2 electrons to lose to achieve stable configuration.

Charge is $Mg^{2+}$

Full ground-state electron configuration of the mono atomic ion:

$1s^2 2s^22p^6$

Part C:

For Se:

Selenium (Se) has 34 electrons and requires two electrons to be stable.

Charge is $Se^{2-}$

Full ground-state electron configuration of the mono atomic ion:

$1s^2 2s^22p^63s^23p^64s^23d^{10}4p^6$

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3 years ago

Which of the following best explains why bonds form between atoms?

ANEK [815]

Answer:

Explanation:

I believe the answer is D because atoms are always seeking to fill up their outer electron shell/valence shell and want to gain a full octet.

6 0

3 years ago

What is the chemical symbol for iron

Genrish500 [490]

The atomic symbol for Iron is Fe, as the Latin word for Iron is <em>ferrum</em>.

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3 years ago

Read 2 more answers

HELP ASAP PLEASEEEEE!!!!! (serious answers only or i’ll report)

Sonbull [250]

Answer:

1st order

Explanation:

because magnesium has a coefficient of 1, it is first order

hydrochloric acid has a coefficient of 2, so it is second order

overall the reaction is third order (1+2)

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3 years ago

How many electrons are there in an atom of nickel?.

Maurinko [17]

Nickel has 28 electrons

5 0

3 years ago