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Blababa [14]
3 years ago
8

Why are halogens so reactive?

Chemistry
2 answers:
Assoli18 [71]3 years ago
8 0

Halogens reactivity decreases down the group, when halogens react it gains an electron to form a singly negative charged ion.

Halogens are reactive because they only need one additional electron to complete their octet. As it go down the group from Fl to Cl to Br to I the size of the atom increases due to an extra filled electron shell. The valence electrons are further and further away from the nucleus, the attraction of forces between the electrons and the nucleus become weaker and weaker  

TEA [102]3 years ago
3 0
<span>This means that has great capacity to react with other chemical elements in nature, reacting mainly with sodium, therefore, can only be findings in chemical compounds in most cases. 

hope this helps!.</span>
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aleksandrvk [35]

Answer:

1.52 g NaOH

Explanation:

The molar mass M is a physical property defined as the mass of a given substance (chemical element or chemical compound) divided by the amount of substance.

Molar mass of NaOH is 40.0 g/mol

40.0 g/mol contains 6.022 × 10²³ molecules

∴ 2.30 × 10²² molecules will contain (2.30 × 10²²) * (40.0)/6.022× 10²³

                                                             = 1.52 g NaOH

6 0
3 years ago
What is 0.0135 moles of in AlCl3 grams? Round to 3 sig figs
Mekhanik [1.2K]

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Explanation:

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