PERIODIC TABLE CROSSWORD 5
18
10
11
Across
2. Group I metals
4. Elements in the middle of the periodic
table are the metals.
5. The sum of the protons and neutrons is
the number
6. Inactive gases.
7. The horizontal rows are called
8. Most of the elements are
10. Nonmetals tend to form lons.
Down
1. Most active nonmetals
2. Group II metals
3. Atomic number is the number of -
7. Metals tend to form_lons.
9. The elements are arranged by atomic
11. The vertical columns are called families
or -

the correct answer is answer a. a mixture

no other options make sense

hope this

have a great day : )

  - sprinkles

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.

i think it's letter a.

it's c (engineer's do their work with mechanical stuff not on any living being)