Question

science ch metals and non-metals class 8​

Answer 1

ExplanatanswerFill  in  the  blanks

1. The  group  number  of  the  element  neon  is  _.

2. The  period  number  of  the  element  aluminium  is_.

3. Horizontal  similarity  can  be  observed  in  the  period  number

4. The  first  element  of  14th  group  is  carbon  which  is  a  non-metal.

5. The  metallic  members  of  this  group  are_

Answer 2

Explanation:

$\frac{p}{4} - 3 = \frac{7}{16} \\ \frac{p}{4} = \frac{7}{16 } + 3 \\ \frac{p}{4} = \frac{48}{16} \\ \frac{p}{4} = 3 \\ p = 3 \times 4 \\ p = 12$

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