Question 6 Knowledge Check Read each description in the first column of the tabl

Question

Question 6 Knowledge Check Read each description in the first column of the table below. If any chemical element with atomic number of 92 or less enter the chemical symbol of an element matches the description, check Yes and that matches. Otherwise check No in the second columrn. If you checked yes, glve the symbol of an match the that matches. An element in Period 6 and Group BA.YesO No A metaloid in Group SA O Yes O No A noble gas with a lower atomic number than sodium A transition element in Period 2. O Yes N I Dont Know

Explanation / Answer

Element in Period 6 and Group 8A is Osmium (molecular weight = 190 and Atomic number = 76) and symbol is 'Os'.

There is no metalloid in group 5A.

We all know the Atomic Number of Sodium(Na) is 11. So we have 2 noble gas, one is He(Atomic number = 2(<11)) and another one is Ne (Atomic number = 10(<11)) .

Transition elements are placed in D - block and D-block start from period 4,therefore there is no such element in period 2.

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