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3 years ago

Describe two patterns in the periodic table?

Chemistry

1 answer:

vfiekz [6]3 years ago

6 0

Answer:

Patter 1: Ionization Energy Decreases going down a group

Pattern 2: Ions tend to gain/lose the least amount of electrons

Take oxygen, for example. Oxygen has 8 electrons. To become like a noble gas it could either gain two to become like neon or it could lose six to become like helium. So what will oxygen do—gain two or lose six? As a general rule, atoms will gain or lose the fewest number of electrons possible.

Explanation:

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Germanium is a group 4A semiconductor. The addition of a dopant atom (group 3A element) that has fewer valence electrons than th

klasskru [66]

Answer:

Doping with galium or indium will yield a p-type semiconductor while doping with arsenic, antimony or phosphorus will yield an n-type semiconductor.

Explanation:

Doping refers to improving the conductivity of a semiconductor by addition of impurities. A trivalent impurity leads to p-type semiconductor while a pentavalent impurity leads to an n-type semiconductor.

7 0

3 years ago

When a neutral atom becomes a negatively charged ion, or anion, the atom __________ electrons. a gains b loses c has no change i

faust18 [17]

Gain .....
It loses electron when a positive charge is formed..ex Na+

3 0

4 years ago

_______ are organic compounds containing a C=O bond, having strong aromas, and known for being

BabaBlast [244]

Ethers is the correct answer

4 0

4 years ago

Which or these equations is balanced H2SO4 + 2Al > Al2(SO4)3 + H2 or 2KCl + Pb(NO3)2 > 2KNO3 + PbCl2

Dmitry_Shevchenko [17]

Balancing of chemical equation is essential because of the law of conservation of mass, which states that the mass of a system can not be created or removed.

The second equation is balanced

$2KCl_(_a_q_) +Pb(NO_3)_2_(_a_q_) ==> 2KNO_3_(-a_q_) + PbCl_2(_a_q_)$

This is because the number of elements of each atom in the product side equal the number of elements of each atom on the reactant side.

The first equation is not balanced

$H_2SO_4 _(_a_q) + 2Al_(_s_) ==> Al(SO_4)_3_(_a_q_) + H_2_(_g_)$

This is because there is 1 molecule of $SO_4^{-2}$ on reactant side as compared to 3 molecules of $SO_4^{-2}$

To balance the equation we add a coefficient of 3 on sulphuric acid ( $H_2SO_4$ ) and a coefficient of 3 on hydrogen ( $H_2$ )

$3H_2SO_4_(_a_q_) + 2Al_(_s_) ==> Al(SO_4)_3_(_a_q_) + 3H_2_(_g_)$

7 0

4 years ago

1. If the atomic number of an element is 6 and its mass number is 14, how many neutrons are contained in the nucleus?

Iteru [2.4K]

You can find the neutrons by subtracting the mass by the atomic number. 14-6=8 neutrons

8 0

3 years ago