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Fill In The Blank Questions: 55.The element which essential for human

Question : Fill In The Blank Questions: 55.The element which essential for human : 1409663

 

Fill In The Blank Questions:

 

55.The element which is essential for human nutrition and is responsible for formation of bones and teach is ______.

 

56.The atomic number is equal to the number of ___ found in a specific element.

 

57.Complete the following table:

 

Isotope

Nuclear Symbol

Atomic Number

Mass Number

# of protons

# of neutrons

# of electrons

 

magnesium-28

 

 

 

 

28

 

 

 

12

 

 

 

 

 

35

 

81

 

 

 

35

 

 

 

Sc

 

 

 

 

 

 

 

58.Complete the following table:

 

Subatomic Particle

Relative Mass

Relative Charge

Location

 

proton

 

 

 

 

 

 

 

0

 

-1

 

 

 

 

1

 

0

 

 

 

59.Beryllium and magnesium can be predicted to have similar properties because they are in the same ___ on the periodic table.

 

60.Given the following elements:  calcium, selenium, and chlorine,

arrange the three elements in order of:

increasing atomic size:_____<_____<_____

increasing metallic character_____>_____>_____

 

61.The number of ___ is the same in one mole of sodium as in one mole of zinc.

 

62.An alpha particle is essentially a(n) _____ nucleus.

 

63._____ radiation is electromagnetic radiation much like x-rays.

 

 

64.  What  type of radiation will be emitted in the reaction below?

65.The least penetrating form of ionizing radiation is the ___ particle.

 

66.  The time required for one half of a sample to undergo radioactive decay is the _____.

 

 

Solution
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Chemistry 1 Year Ago 56 Views
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