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Sedbober [7]
3 years ago
8

One molecule of the oxide of element Z reacts with six molecules of water to

Chemistry
1 answer:
zalisa [80]3 years ago
8 0
I can guess that Z is Phosphorus. So the oxide - P4O10 (but the most known its empirical formula P2O<span>5)</span>. Reaction with water:
P4O10 + 6H2O = 4H3PO4. Acidic compound is phosphoric acid.
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Which of the following statements are true about whether atoms tend to gain<br> or lose electrons?
Dafna11 [192]

Answer:

C and D

Explanation:

Atoms with five, six or seven valance electrons gain electrons to complete the octet because it is more convenient for the atoms to gain three, two or one electron as compared to lose five, six or seven electrons. Thus atoms with five, six or seven valance electrons form negative ions by gaining electrons.

Atoms with one, two or three valance electrons lose the electrons to get complete octet because it is more convenient for the atoms to lose one two or three electrons as compared to gain the seven, six or five electrons. The atoms with one, two or three valance electrons form positive ions.

5 0
3 years ago
How do you determine valence electrons of a metal? A non Metal?
Harlamova29_29 [7]

Answer:

Check the electronic configuration of elements.

Explanation:

▪Valence electrons are the elwctrons present in the outermost shell of any element.

For example,

Electronic Configuration of Sodium = 2,8,1

Here , Sodium has 1 valence electrons.

▪Valency of an element is the total no. of electrons to be gained/losed in order to achieve duplet/octate state.

For example,

Electronic configuration of Sodium = 2,8,1

Sodium can achieve octate state either by losing 1 electron or gaining 7 electrons. But losing 1 electron is eay than gaining 7 electrons. So Valency of Sodium = +1

☆Metals have 1 or 2 or 3 valence electrons.

☆Non metals have 4 or 5 or 6 or 7 valence electrons.

☆Noble gases tend to stay in duplet/octate state i.e they have 2 or 8 valence electrons.

5 0
3 years ago
A sodium atom has a mass number of 23. Its atomic number is 11. How many electrons does a neutral sodium atom have?
NemiM [27]

Answer:

it contains 11 electrons

Explanation:

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3 years ago
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nordsb [41]
Melted rock and minerals below the earth's crust is also known as magma
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A student drops some metal paper clips in a box of sand. The student uses a magnet to separate the metal paper clips from the sa
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Answer:

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because now there are one together

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