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34kurt
3 years ago
14

. Based on their position in the periodic table, predict which (of the two elements given) will be more reactive Circle your cho

ice.
a. V and Rb b. Ne and O c. FandO
Chemistry
1 answer:
Vladimir79 [104]3 years ago
8 0

Explanation:

your anawer to the question is A. V and Rb

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Please explain how to find each answer solution.
svp [43]

Explanation:

1) Based on the octet rule, iodine form an <u>I</u>⁻ ion.

Therefore,

Option E is correct ✔

2) The electronic configuration of the sulfide ion (S²⁻) is :

₁₆S = 1s² 2s² 2p⁶ 3s² 3p⁴ or [Ne] 3s² 3p⁴

₁₈S²⁻ = 1s² 2s² 2p⁶ 3s² 3p⁶ or [Ne] 3s² 3p⁶

Therefore,

Option E is correct ✔

3) valence shell electron of

Halogens = 7

Alkali metal = 1

Alkaline earth metal = 2

Therefore,

Option D is correct ✔

4) Group 2 element lose two electron in order to achieve Noble gas configuration.

And here Group 2 element is Sr

Therefore,

Option B is correct ✔

5) Group 13 element lose three electron in order to achieve Noble gas configuration.

And here Group 13 element is Al

Therefore,

Option B is correct ✔

6) For a given arrangements of ions, the lattice energy increases as ionic radius <u>decreases</u> and as ionic charge <u>increases</u>.

Therefore,

Option A is correct ✔

7 0
3 years ago
Which substance can act as an Arrhenius base in an aqueous solution
miss Akunina [59]
An Arrhenius base is a substance that are being dissolves in water dissociate and gives Hydroxide ions. (OH⁻) 
7 0
3 years ago
What happens to a person's weight on smaller and larger planets?
wlad13 [49]

Answer:

The amount of gravity they have depends on their size. So, a small planet has less and a larger planet has more gravity. Just like the planets, a person with more mass has more gravity and therefore weighs more.

5 0
3 years ago
How many molecules are in 15.0 milliliters of ethanol (C2H3OH)(The density of ethanol is 0.789 g/mL)
Kryger [21]

Answer:

1.57×10²³ molecules

Explanation:

Given data:

Number of molecules of ethanol = ?

Volume of ethanol = 15.0 mL

Density of ethanol = 0.789 g/mL

Solution:

Mass of ethanol :

Density = mass/ volume

0.789 g/mL = mass/ 15.0 mL

Mass = 0.789 g/mL× 15.0 mL

Mass = 11.84 g

Number of moles of ethanol:

Number of moles = mass/molar mass

Number of moles = 11.84 g / 46.07 g/mol

Number of moles = 0.26 mol

1  mole contain 6.022×10²³ molecules

0.26 mol × 6.022×10²³ molecules / 1mol

1.57×10²³ molecules

5 0
3 years ago
A mutation occurs whenever one of the bases in DNA is changed. What letters represent those bases?
kenny6666 [7]
A: adenine
C: cytosine
g: guanine
t: thymine
5 0
3 years ago
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